Beauty n the GOD

why do people enjoy nature?? for that matter why do we feel happy to see lush green pastures, hills or streams?
Wuts this thingie called GOD?? in atheists point of view, why does there have to be GOD and why do almost all humans no matter what background they come from have one??

i am tryin to find an answer based on the assumption that useless traits are not carried along with evolution... which is kinda valid
appreciating natural beauty seems to be coz of this... not long ago we were searching for food like our ancestral primates and running behind streams for water...lush green forests are always the source of good food either it be fruits or those small animals that eat them...
to appreciate that even today seems stupid to me... but i guess our definition of beauty changes...
may be after a few generations, those hills n streams dont make humans as merrier as the sight of restaurant or smthng, which became our source of food...

coming to god, people always like to be amused and want to believe in mysterious things...i gotta quote A.Einstein here-"The most beautiful thing we can experience is the mysterious. It is the source of all true art and all science."
there is a reason to it... our brain can be approximated as bayesian.( So, we try to presume things based on prior experiences rather than believe in what we see... infact our brain processes information and gives us substituted reality so that it fits in to what we know till then, phantom limbs being the best example...) so we assume things to a certain bit and any new predators or surprises are covered by our brain and are prevented from entering our conscious perception, unless they make a big impact so as to be accommodated in to our priors.
this led to selection of individuals who have affinity towards surprising/new changes/things in the environment (n apparently survived those changes/predators) ... so we are here, bound to pay attention to mysterious things which do not fit in our common sense...
coming to god, our ancestors observed patterns in environment but couldn't find proper reason as to why the world had to behave in a predictable way... they attributed it and everything which cant be explained to god... we do that even today!
this carved god as the conglomeration of mysteries and we are bound to pay so much of attention that we treat it as supreme power n all...
infact there is this thing called amygdala in our brain that some believe is responsible for such beliefs as god... also this part is resposible for our emotions like fear, pain, anxiety, pleasure etc., these emotions play a key role in deciding what memory is to be retained for long term... Interestingly enough, this region is responsible for learned fear!! does this give u any clue?? well... i think god is a kinda learned fear! its like a complex combination of mystery and fear... we are all addicted to it but we dont see it coz most of us r this way...

i dont wanna make anymore stmnts on god as its more of an emotional stuff to many...

i guess u got my point