Reversed aging would get weird. The Curious Case of Benjamin Button definitely makes that clear.

And yeah, in 10 years, I'll be 45. I can honestly say my personality hasn't really changed much from 25 to 35. I'd rather live my life as a fun, always young at heart guy rather than be in a rush to be boring and "mature." A good friend of mine is 41 and still collects Star Wars stuff, Transformers, and geeky stuff like that and he's one of the coolest, friendliest, and happiest guys I know. His wife is a lot of fun too and they both have a really beautiful house and are now trying to have kids. :)