With all hobbies, you should stop when you lose either the enjoyment or the means to pursue them.

d_d

What does age have to do with it?  I think it's time to quit if the hobby is no longer fun and exciting.

I'm 56 and still going.  I doubt I'll quit anytime soon

As long as you derive pleasure from the hobby, why quit?  Ever.

Not because of your age. When you want to stop is when you stop.

Shaye

I am pushing 50 and as long as I can still enjoy a couple pops an hour I do not see why I should stop enjoying the pleasures of a beautiful woman. After that I will have to satisfy myself with pleasure of making her feel great.

50 too old ? Good god I hope not! I just started  18 months ago when I was 49. I still feel like 39. Even better. I find I take better care of myself now than I ever did.

A man is...

only as old as the woman he feels.  As Groucho Marx says, "I must confess that I was born at a very early age..."