Is it normal that i prefer a particuliar woman (a bigger, plus sized woman)?

My mother and many of my aunts are all plus size women.
I'm a 41 year old male and i've been with different types of women (thin, short, tall) and i have a life long preference for a heavier woman.
When my wife and I began dating she just turned 18, was a size 16/18 around 180 pounds at 5'7".
Over the years her body has gone up in weight and I adore her!
During her pregnancy she went up to about 240 pounds.
After our child, she gradually increased up to almost 270 pounds.
At one time she was almost 325 pounds, 5'7" and i loved her just as much.
She isn't a "sloppy fatty", her body is appropriately proportioned; 44DDD tits, about 54" ass, 57" around her hips, there is no weeble wooble, pot belly, upside down coke bottle, or any other body style.
Her body weight stays around 250-290 pounds, huge belly, hips, thighs, waist, ass, breasts, etc.
She has gone in every year or two and is always deemed a clean bill of health (no high cholesterol or anything like that).
I have tried to see thru different sites if its normal to prefer a bigger woman, and i mean a bigger woman.
Ive seen some porn movies called "fat beach patrol" where the women are very big women, Well over 300 pounds!
I find these women so attractive.
Along with a pregnant woman's belly and/or tits (especially when they lactate).
I'm even speaking to my wife to begin taking prenatal vitamins and hormones to initiate lactation so i may nurse from her.
Is all this preference for pregnant, lactating, huge ass, big tits, wide hips, thick thighs, huge jiggly belly (and seeing her jiggling during sex being a huge turn on) normal???
***I've been told that since my mom and aunts were very caring and protective over me, (some people in my life were mentally and/or physically abusive) my inner psyche has linked safety in the motherly arms of a bigger woman...
Does anyone else ever feel like a freak to prefer big women, not a fetish either, but an unchanging preference***