Why people loves sex?

i like sex and i love to do it very much i began with bbw sex it was amazing fat legs ass arms boobs tits everything in bbw was big and very big when i did sex with hers i feel as a strong man cause there is a big lady or mega fat lady you put her in your dick and make it horny and feel happy so in the end i would love to say in sex there is a nice person inside us love to do many strange things it calls desires