Does masturbation enhance the penis?

My own personal experience would be neutral, at best. Mine was 5.0" long at age 14, and still the same decades later. And still thin: 1 1/8" "thick". But weaker erections now.

I've always manipulated only around the glans rim using thumb and two fingers. Maybe full-hand grasp would've been more effective in stimulating growth, but a bit challenging on a 5-incher.

But please accept my congratulations for this very impressive change. Wow!

Thank you, I am not sure exactly 2 inches enhancing my penis, but I feel defiantly a great change in length and thickness.

No change in size from age 13 to 73

There is a technique that could help enhance a little bit, the name is jelg! I don't know the exact spelling? This method is based on gripping your shaft with your two fingers to make a ring and move from bottom to below your glance. Your cock should be erected and apply a little pressure while moving, using a little diluted lotion helps to move your finger easily. You shouldn't let it cum.
This exercise should be done for several months to see any changes. I did this technique every day for near one year but only my cock thickness has increased a little and it stays hung without any shrinkage at the normal.

After 50 years of masturbation I have had no increase in the size of my small penis, at an inch long when flacid, and two and a half inches when erect, my penis hasn't changed since I was 12.

Mine penis has grown some. I wouldn't say two inches, but lately I've looked at myself naked in the mirror and realize that flaccid, it's probably an inch longer than in my teen days. When erect it does look bigger and seems a bit longer in my fist when masturbating.

My penis is always hanged down without any shrinking after jelging for 11 or more months in 20 years ago. I think gripping for many years including masturbation caused to expand the texture of my penis. That is why it is almost hanging down.