Having worked in a gun store before... I can attest, that LOTS of people want to be Rambo and buy the biggest ---- rifle they can because they think it will make them cool, or look like a badass, or someone recommended they buy it, and they don't know anything about guns... They shoot less than a box of ammo through it, and bring it back for something smaller because it hurts to shoot it. There's lots of barely used magnums, ultra-mags, lapuas, etc... sitting on used gun racks across the country at discount prices, and still collecting dust.
Personally, I'm not recoil-sensitive, but it seems a lot of folks are.
That being said, I think a lot of the guys on here just like trying different stuff. They'll build something and shoot it for a while, then they get the itch to try something else, so they sell the old rifle, and build a new one. Sort of like I do with cars & trucks... I buy a new one, drive it a few years and keep the miles down on it, then when a new one comes out that I like, and I find a model with all the options I want, and get the deal I want on it, I upgrade to the new model.