Pleasure does not promote survival. In many cases it is harmful to ones health.
Our bodies and therefore also our brains did not evolve for the kind of life we are living now. For instance, a craving for sweet, salty and fatty foods would have been an excellent survival strategy in a hunter/gatherer society.
You are speaking of a motivation to excite the sensibility. I am speaking of ultimate preference that urges the motivation.
I think you're going to explain that some more before I can properly respond then because right now I don't see the point you are trying to make.
You say you are an atheist. You are assuming there is no God. Your assertion that you are an atheist is not in response to anyone's question to you. You made the declaration without provocation. What scientific method did you use to arrive at your conclusion? Is there a cure for cancer?
I'm an empiricist first and foremost. The fact that that also makes me an atheist is more of a consequence. I am also a-unicorns, a-astrology, a-crystal healing and a-homoeopathy if that matters. The question may not have been addressed to me specifically, but the claim is being made by theists that there is a god. I don't make the counter-claim that there is no god, but rather that there is no reason to believe the theist claim.
As for science... Well, in science you're not allowed to make claims without proper backing by evidence and in that respect theists are way out of their depth with their god-claim.
So the next time fire burns my finger I should try it again to see if the experience lied to me?
I don't know. Perhaps you should do a study on it and see if you can get it published.
I'm not sure trying it again will help though, since if you suspect your senses/perception/experience lied to you why wouldn't it do so a second time. Try gathering some objective evidence and conduct some repeatable experiments and maybe we'll get somewhere...
There may be no reason for you to believe, but real science doesn't dismiss anything without evidence. You are abandoning science to make unscientific assumptions. Science can neither believe or disbelieve without evidence. The science you claim is on your side you are abandoning for faith that god doesn't exist.
Faith (in the religious sense) has nothing to do with my position.
Also, see above for the explanation on scientific claims.