Everyone!: what is your opinion on life, religion, love, everything (scientificly)?

my opinion on: Life, starting with bacteria and single-celled ofcourse, but how does it accualy work? crazy. the goal in Life to me is just a life form (animal/plant) trying to get to its most advanced, highest and most adapted level. it seems like everything has changed though, humans are different... it used to be survial of the fittest, the strongest male got the oppurtunity to mate.. now its.. different. Religion, before science it was easy to take advatage of people, they were very ignorant. pretend your a farmer from 2000 BC. your crops are doing bad and you might die. a huge rain storm comes in and saves your crops. now i say, that was me, i can speak to the creator and i told him we needed rain. if you want rain to continue you need to support me with food. Wait! now rain didnt come! then i tell you, you didnt give me enough, or we need a sacrifice to keep him happy, or blame it on a person, etc. Humans were so barbaric, and still kinda are. To me religion is obsolete. Love, i used to be ostonished by love, its insane, how you magically 'love' someone based on different things. well those 'things' are what we as humans want as good mates. for example, we used to think fat girls were hot! im not kidding! in about 3000-2000BC all statues were of fat women, and ancent writings would be describing these obese women, and for a strange reason, there wringled forhead. strange huh? well back then food was harder to get, and there was no refrigeration so if you didnt have fresh food you couldnt eat it. fat women had stored fat, could survive through famines and sickness easyer. also they can carry a child and produce milk for it. In conclusion, in my opinion LOVE is just us choosing the best mate for us, to reproduce, and to live. traits we find that we like just will have a better genetic code, or match. What do you think? am i crazy?? lol