I started collecting baseball cards in the mid-1970s, and have rarely stopped since then, though my tastes have changed a bit.
I've got complete sets going back to 1968,
I buy an occasional new pack here and there, but most of the time, I go after the older stuff. Presently, I am trying to get all cards of Hall-of-Famers and Cincinnati Reds made during the 1950s.
Frankly, I am not worried about the shape - I do it purely for the love of the game. Right now, it's a buyer's market. Got a pretty nice Ernie Banks rookie for $106 a couple of weeks ago.
I am also very close to a complete 1933 Goudey baseball set, missing six cards. Unfortunately, those cards are 3 Ruths, 2 Gehrigs and one Nap LaJoie (literally, one of the rarest cards ever made). I've a few tobacco cards (Cy Young, Christy Mathewson, Three Finger Brown) and even have a few 19th century cards of the likes of Timothy Keefe, Dan Brouthers, Buck Ewing and Monte Ward.
Yeah, I spend a bit on them (even more than porn, believe it or not), but I enjoy it quite a bit.