Is it normal that I like fat girls, when I'm a girl myself?

I'm a straight guy and I LOVE fat girls... There's something instinctually alluring about the fat female body.

Honestly, I believe that this modern obsession with thin women is actually more bizarre than an interest in a woman who is thick and curvaceous. For the greater part of our heritage, body fat has meant health, prosperity and fertility. "Here is a woman with the resources to gather plenty of food, who can bear and feed your children without dying, and who is not being eaten by parasites or disease," fat instinctually tells us.
Also, fat means round, curvy bits, which in the human female equates to secondary sexual characteristics- tits, ass, thighs, and a bulging gut basically only serve to echo these things.
Also, across the world, people have been worshiping fat little fertility goddess statues for thousands and thousands of years; we've only been interested in women with 12-year-old-boy-hips for 50 or so.

So yes, completely "normal", and on top of that very natural. You know if this culture wasn't so obsessed with portraying skeleton excuses for "women" as attractive I think a lot more people would admit to liking fat girls.