Pointless statement to make
And if you want to talk about science, the metabolism, skin decay, collagen and elastin breakdown make a huge difference between 20s and 30s. Her's the bit of science for you mate... 
You clearly haven’t a clue.
Collagen can slowly start breaking down from 25 years of age but is dependant on genetics, lifestyle and race so could be much later.
Ageing can start as early as 25 for some again dependent on genetics, lifestyle and race so could be much later.
Metabolism doesn’t start to slow down until mid 30s but even then it’s gradual and once again is dependent on genetics, lifestyle and race so could be much later
Bone mass doesn’t start to decline until 40s and even then it’s slowly.
Blacks age slower than whites, so do Asians more so south eastern Asians, so that’s a factor also.
Diet is a factor, exercise and general lifestyle in regards to alcohol, drugs and smoking.
It’s funny you completely ignored the part about having loads of cock doesn’t stretch a pussy, it’s built far more sturdy than that, hence why many women can pop out several sprogs no problem. Our cocks ain’t gonna make a difference

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Don’t talk on what you don’t know mate.
LLPunting has some good points which you conveniently ignored. Wonder why.
