That isn't actually correct.
The model DOES work. There are just some things were it is insufficient.
Just like with newtonian physics. That model also works. It's just insufficient once you start dealing with very high speeds or whatever, when relativistic effects need to be accounted for.
The effect is very real. There factually IS something that produces those gravitational forces. In that sense, dark matter is real.
The thing is, science doesn't know what dark matter actually IS.
But that there is
something causing those gravitational forces, is pretty much fact. We observe those forces. We detect those forces. We just don't know exactly what is causing them.
The evidence is the gravitational forces we observe and detect, but can't account for.
There's nothing wrong with the model of observable matter with mass. Why would it need to be changed?
No. Hypothesis aren't a matter of "belief". Scientific hypothesis, or even theories for that matter, are "believed" in science.
Science doesn't deal in beliefs.
I'll let the scientists come up with the models and take their word over yours any day of the week.
If you think you know better then the brightest working physicists alive today, you are most welcome to contact them and explain them your ideas.
Then you can return here and start ranting again about what-I-can-only-call conspiracies among the community for "not wanting to look at your evidence".
I don't have anything to lose. Or to win for that matter.
I'm not a physicist and I won't pretend to know better then them. Heck, I won't even pretend to even understand what all that dark matter/energy is really all about. I stick to superficial lay-men explanation thereof, because that's about as far as my knowledge on the subject goes.
I'm not so arrogant as to pretend that I actually have something usefull to contribute in those fields.
I'll happily lecture you on software design patterns etc though, which is my area of expertise.
Drop more names, namedropper.
And what... no Dawkins rants this time? You disappoint!
EVEN Feynman? Wauw!
Critical thinking is good. But when it crosses over into arrogance, that's where I get out.