Sorry, this doesn't make sin more powerful than holiness. It means that God respects the decision a person makes, and will not force what He knows is good for us, if we choose not to accept it. Even after we accept salvation, we can still turn our back to God and walk away. The numerous warning in the epistles, encouraging us to continue until the end testify to this.
Yes.
So when is a person saved? It's only done if we continue to stay believers until we die. When we walk away from God, we don't get the crown of life promised to us.
When God does something, it stays done, I agree 100% with that. However, the walking away is our doing, something that God has let us decide upon.
True. However, this is something God lets each person decide upon for themselves, and respects the decision of the person.
No one goes to Heaven against their will, salvation is not forced on anyone.
Salvation is eternal and irreversible. However, when we believe, we have the promise of salvation, and only receive the actual salvation when Jesus returns.
Until then we have the promise, vitrually salvation but not the actual thing.
If we do not bear fruit, we bear no resemblance to the seed which we spring from, and will be thrown into the fire. Those who do not bear good fruit, are not even children of God, and to think that they are is a mistake.
Also, could you elaborate on why you say the love we are offered is unconditional? I kind of disagree with this, the way you posted it, and just wanted to clarify what you actually meant, before I go opening up a whole new can of worms here