There's no way to try everything, both economically and time-wise, but aviation is a very big and diverse field, so it's fine. Not everyone will be interested in all aircraft and all airports, after all.

For instance, I fly nearly only airliners, so all the smaller and military aircraft are excluded, on top of all the smaller general aviation airfields.

It's a massive hobby, and I don't know anyone that partakes into *all* of it. it's simply not doable :D