I'm age 52 and have no idea what I want to be when I grow up
Is that really that important at this stage in life?
I think it is. I am 52 and I want to finally choose my path.
I'm sorry to break this to you, but if you're 52 years old, you're far past grownup. Being undecided isn't a bad thing, though.
I know I am 52, but I do not feel like I have fully matured.
I think that your age qualifies as grown. I do think that it is okay that you do not have a clear plan in life yet. Some people are just not designed to stick to one path in life.