@Zen00 Science does not prove because all science can do is create theories and disprove them. That's just its nature. Proving something is not part of the deal. What people actually believe in when they think they believe in science is the current consensus of the scientists.
Even though I "believe" in evolution I want to add that there are arguments against it. To name one: Suddenly: Trees. Trees just popped up in a super short timeframe – way faster than our understanding of evolution would imply (of course our understanding might be wrong). Another one is the fact that in super short lived organisms – mayflys – evolution should be happening in an observable way when you put them into a specific environment for long enough – but it doesn't, the studies have been done. Again this indicates that our understanding of evolution might be wrong.
There is however a bigger mystery: Everyone knows DNA. But DNA is suuuuuper complex. Science has no explanation for why some carbon molecules would ever have arranged themselves in anything resembling DNA. "It just happened somehow" is the best explanation we have – and that is no explanation at all.
Well and of course there is the biggest mystery: Why is there anything at all? Let me make the paradox tangible:
Take a bike. Say I borrowed it from you. You borroed it from @Bela-Hella. @Bela-Hella borrowed it from @Adyyan who borrowed it from @Mr-Ghost who borrowed it from @DarkIce who borrowed it from @SoFa_king_Cody who borrowed it from @Kakashi who borrowed it from @Alte... You get the idea. Now assume that this chain goes on forever. It explains why I have the bike now and you had it before me. But it does not explain where the bike came from and it does not explain why there is a chain in the first place.
So to be honest I believe that life is just way too amazing, way too specific and way too complex to have just happened – just like the guy who found DNA: his research converted him into a believer. Also I believe in rationality and that chain just needs a reason to exist if we are not going to throw logic overboard (though it is certainly possible that our mind's logic is not able to comprehend existence). So what I believe is that there was evolution and that evolution was directed.