ah...i see the disconnect, i'm always talking potential "real world" if we are just analyzing gravities effect on breast tissue over time , whats' the point..LOL 
I like my women old, preferably in their mid forties and used, hella used, because how can you consider yourself a man if you wanted young, firm, vital and confident young woman? Doh! Shaggy tits, cellulite thighs and huge open space of a vagina is where it's at!
Dude like I said there are always exceptions...but think about these the women you talk about being 20-23 having the best experiences sex wise.....now think of those same girls 10 years older but still looking good and have kept themselves in shape with that much more experience sexually 
....then take into consideration the late bloomers.....I'm no youngster but I'm having the best sex of my life with my current girlfriend.
good for you. Every relationship I've had I've fantasized of eating and fucking other women. I don't know how people keep their interest with the same woman, and still have sex like it was the first time when they met after 10 motherfucking years of relationship, it just seems impossible to me.
The woman has to take care of her self pretty fucking good.. 10 years...... lol.