Interesting thread, I've enjoyed reading the posts as many rang true for me.
Why am I fat? Well it's alot of things for me, including:
I snack when I'm stressed. I can remember night after night studying (as my children slept), and pouring a big bowl of M&M's to reward myself.
Abuse as a child, I think pushed me to subconsiously overeat. The therapist during my psych evalucation told me that this is a very common thread with heavy women.
I also use food for comfort. One of my favorate foods as a young adult was a pot of hot Tapicoa pudding made from scratch (yes I'd eat the whole thing).
And finally I'm firmly convinced that dieting made me fat. Even though I was over weight for a few pre-teen years, I really didn't gain significant weight until I started dieting after the birth of my first child. Lose 30 gain 50 etc.
Thanks for asking the question, and for everyones posts.