Same. There's nothing you can say or do to deny it at that point. You're "Middle-Aged". People can refer to you as "that older gentleman" and you kinda can't say sh*t because they're right. You may not be "old" yet, but you're definitely "Older". And that can be tough on the ego. At that point, it also becomes creepy to flirt with chicks in their 20s, in most folks' eyes, and that's pretty rough to give up.
Ultimately, I guess it all depends on how vain you are. I, for one, am very vain, and thus, face the occasional existential crisis about getting older.
As long as my hair stays where it is, though, I'm sure I'll handle the rest of it just fine.
Well, maybe not visits to a proctologist. That's the part of my 40s I'm glad is still almost 10 years away. And who goes to med school so they can stick their hand up someone's ass, anyway? I mean, I know it's a valuable, necessary medical procedure, but doesn't it kind of say, I'unno, *some*thing about the doctor, that they chose to do this for a living?
Huh... well, that was random.