childhood masturbation effects as middle aged man

I would like to hear thoughts on the effects of childhood/teenage masturbation as they relate to the sexual health of a 46 year old man.

As a child and a teen I masturbated to excess. I believe my penis and overall virility are smaller now (age 46) as a result.

Do you feel that such excess as a child makes it even MORE important that I retain semen as a middle aged man? Should a man with a penis size of only 4 inches emit any semen at all at my age?

Thank you all in advance for your thoughts.

David, in Los Angeles.