I say what I did because necessary existence outside the universe is not subject to laws of physics in the universe that came into being.
The universe is all there is, so there is no 'outside the universe'.
A subsequent generation of universes will be necessarily lesser, with less mass, with less energy, if it were possible.
No, it doesn't work like that. In General Relativity, the total energy of a closed, compact universe is zero (if you account for gravity, which balances matter & energy). So a microscopic phase change 'bubble' can expand into a universe as big as you like without any overall energy change. The energy of the expansion itself produces the matter and energy (also, energy is not conserved in GR at scales where the dynamism of spacetime is significant - how much difference that makes, I couldn't say, not being an expert).
You are not understanding infinity rightly in concluding that. All possible infinities are not the same. Consider, or learn where you can, aleph zero, aleph 1, and aleph 2, referring to infinities. Sorry I cannot make the symbol for it with my phone access. Ongoing time would correspond to aleph 0, the other infinities are greater. All possibilities corresponds to Aleph 2, a greater infinity. Given infinite time would not mean all possibilities will happen. More possibilities will not happen than will, that infinity is much greater.greater.
No, we don't need Cantor; I'm talking about specific events. Over an infinite time, any event that has a non-zero probability will occur, as long as the probability remains above zero. For example, every atom will decay, and every particle (that can decay) will decay. This applies to parts of the false vacuum too.
This is where physical laws of the universe which came into being are applied to necessary existence, the conclusion of which is not logical. What is necessary necessarily persists. What is necessary is without limit.
It doesn't matter what the physical laws are, a creation is an event - something that happens, a change
initiated by the
action of what in this context is often called the 'First Cause'. Tautologically, what is necessary necessarily persists, but if it exercises agency it must change to do so.
Yet with slight difference of parameters in the universe coming from a big bang no life would be possible anywhere in it.
No life as we know it, perhaps; but possibly other types of organised complexity. However, as the Weak Anthropic Principle says, intelligent observers will inevitably find themselves in a universe capable of supporting intelligent observers.
It's interesting that inflation theory (where an eternally inflating universe continually produces 'pocket' universes), was proposed before the apparent fine-tuning of our universe was discovered, and provides a statistical explanation for such fine-tuning, albeit somewhat intellectually unsatisfying...
The point I mean is that what we attribute to personhood has no justified explanation from only impersonal sources producing that.
I can't make sense of that; if you're suggesting that the material of the universe can't produce people, that's an assertion that contradicts all the available evidence - people are grown from that material. Going further down that rabbit hole would need another thread.
What I understand is that all matter has forces, including weak nuclear force, strong nuclear force, electromagnetic force, and gravitational force. Gravitation is cumulative, the more mass anywhere the more gravitation on all bodies of mass there. The mass of larger stars, and anything larger, is enough to collapse into a black hole, that can draw more in but from which nothing moves out or away from, within an event horizon. More mass than that would not eliminate this.
That's all true, but remember that gravity is by far the weakest force, its strength is inversely proportional to the square of the distance between the relevant objects, and the universe is expanding. Only gravitationally-bound structures can resist moving apart due to this expansion. Beyond galaxy clusters, possibly superclusters, gravity is too weak to overcome this expansion. So these galaxy clusters will eventually become black holes, and those black holes will become more an more distant from each other until they finally evaporate.
I do not see that infinite mass could not be explained from the universe coming into being, or not collapsing ever.
I can't parse that... but I'll guess - it won't collapse because it's expanding (see above). Even a 'bubble' universe can be infinite - General Relativity effectively allows infinite mass and infinite volume to be produced from a finite volume in a finite time; it's a mathematical result of relativity - from a viewpoint inside the bubble universe, it is infinite. Max Tegmark gives a fuller description in '
Our Mathematical Universe' pp.114-117.
Still nothing logically excludes the creator being necessary existence, which explains things of the known universe, and us, as personal beings with what we attribute to that, very well.
Of course, it's an unfalsifiable claim; the same applies to any of the origin myths that have been created through history, and any other origin story you care to invent. What they all have in common is that they're unfalsifiable, ill-defined, invoke fanciful ontologies, and are redundant.
The models I've described may not be directly testable, but are indirectly falsifiable, are derived from well-established physical theory, and are metaphysically parsimonious.