If something has been proven, then it's no longer a theory, it is a conclusion based on fact.
Acceptable, as in many believe it, no more proves a theory as fact than purporting something to be true makes it true fact.
I have never seen proof of evolution. I have seen adaptation attempting to be passed off as evolution, but that's apples and oranges. The "missing link" is still missing.
There is no proof of where "life" came from on this planet, none, period. All scientists will agree on that, and there's no proof at all that by some luck of chance DNA arranged itself into a living thing in a primordial ooze all by itself in a random fashion. Life was brought here, one way or the other, it was deposited here.
That is my belief, however contrary to what others here may believe. And again, I have seen things that are not of this world, but I get the impression now that some here would call me nuts.
I didn't mean to cause a stir so, maybe I'll just bow out of this conversation.