Sometimes it's easy to focus on the negative aspects of aging, but I think there are lots of good things about it. Right off the top of my head, here are a few of them.

I've mellowed.
Other people's opinions of me aren't nearly as important any longer.
I wear what's comfortable.
There is more time to volunteer for causes close to my heart.
The children are grown, and now we get to enjoy the grands.

That is just a short list to get us started. Won't you please add what you like about being over 50?

I'm less concerned about fitting in.
I'm more driven to go after what I really want and discard the rest.
My kids are just teenagers, but I'm enjoying the personal freedom that results from their growing independence.
I get a kick out of defying stereotypes about middle age.
I find it easier than ever to accept myself as I am.

Freelance

What I like about being over 50 is the wisdom I've gained. Knowing what is really important in life - kindness, loving and being loved. I like humor. I love to have a good laugh and make others laugh. I'm still working on figuring out when someone doesn't appreciate my humor. I'm getting better though.

I will never again have to worry about looking good in a bikini

Find that many things I used to think were important, I couldn't care less about, and discovering what really is important.

Jane, I'm with you on not caring what other people think, and wearing what's comfortable, ie shoes. I went through years of sore feet because of the shoes I just had to have!

My main thing is now that I'm well over 50, I can get away with being mean and crabby and people just shrug and say "It's because she's old!" I can remember when I worked retail and I would wait on these crabby old ladies and think to myself "Am I going to be like that when I get old?" And the answer is YES!