Try not to say “That’s what most atheists think” because ‘atheists’ do not think alike at all except for their lack of belief in deities. Many atheists and many religious people see no problem with religion and science existing in concert with each other. I don’t see any problem with it. If that’s what you want to believe, more power to ya. 
I don’t particularly see the world or universe as “perfect” to be honest. It just is. It’s like a puddle. The hole isn’t perfect for the volume of water in the hole but the other way around. We are ‘formed’ (though that’s a bad word but I don’t know a better one) to fit our environment.
I don’t know what you mean by your “another question”. Can you elaborate a bit more? Remember, don’t ask “Do atheists think” as if we’re some monolithic group with exactly the same beliefs. Just ask what we, as individuals, think. “What do you think…” or “What is your opinion on…” rather than “What do atheists think…”
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Yeah, physicists.