Leather Jacket Advice

Hello, I’m 23 years old and I’m considering investing in a classic leather jacket. (One suitable for casual informal evening events, etcetera).

Firstly, is this a sensible idea? Perhaps I’m too young for one? I realize I might get bigger over the next couple of years so perhaps I should wait a while?

Secondly, what should I be looking for when buying one (with regards to fabric quality, fit, style, etcetera)?.

P.s. I am referring to buying a nice classic leather jacket – not a cheap fashion one which will look dated next month.