is anyone else here set on an age where they think enough is enough, I don't want anything past that age

I've thought about this long and hard (it's something that's important to me), and I've decided that I'd hate to live past the age of 50- I think 50 is my limit

is this wrong?

actually setting up the age you want it all to end?

I don't think so. to me it's a comfort, to me it's knowing when I've had enough (and 50 years on this earth is what I believe I can take), and it's helping me plan ahead better for like the end etc

thoughts?