I limit myself to circulation strikes for budgetary reasons... I am on a fixed income and have to enforce some limits...
As a general rule no proofs nor patterns, although I do have some that I did manage to obtain..
That being said, I am a completionist by nature and try to include the varieties when I can...
I have been fortunate in acquiring many scarce and rare varieties although I know I cannot acquire everything..
If money were no object I would collect EVERYTHING, that being the completionist in me..
I know that there are several bronze pennies that I probably will never own, unless I find them unattributed somewhere.. the 1933, the 1952 & 1954, I have an F-192a but not the new variants, the rare 1953 varieties, the 1863 slender 3, die #'s 3 & 5, etc.... However, I keep on looking... hoping to at least possibly find an F-19 somewhere...
It's as much the thrill of the chase/hunt as anything else.... discovering new varieties etc...