IMO, it's nothing but a pride thing because they can't & don't want to handle the aging thing like normal people do.

I know that there are many celebs that don't get caught up in that environment & the pressure & they do just fine in their careers....their parts just change as they get older & fit them as they age....it's the ones who don't want to do that that get caught up in their pride & their desire to find the fountain of youth.

I refuse to even color my hair......I am what I am & it's just something that one learns to live with........

There are other even more serious issues going on in the entertainment industry that lead to these behaviors that I think are even more serious problems but I think this is a symptom of those things.