I like thick women personally. Decent size boobs (for looks more than anything) and a nice set of hips/legs, and a nice rear and thats all I need. Dress in some nice clothes, and its ON baby!
As to why boobs are so great, no idea, we are just programmed that way

I love my boobies, but honestly, I LOVE when a woman just looks GOOD in regular every day clothes. Provides a fantasy for me.