Not quite a completist, I buy Marvel Age Super-hero titles only. Which is all of them except Rawhide Kid and Sgt. Fury. I plan to buy them all through 1979, but all of the titles that I care about completing are open currently and any new title I may or may not choose to pick up. Also after about 1980 there are a few titles like Thor from #302 - 326 that I will skip.

So I guess as time goes on, I become less and less a completist. People really shouldn't buy what they are not enjoying.