I am more of the mind that Billy is - if it exists and I can get it at a reasonable price, I collect it. I build sets and collect single player cards of HoF and players that I enjoyed watching play. But I do not limit myself to any one brand or set. I often buy large lots of cards that someone is looking to rid themselves of and fill in my sets or start new sets. Usually, I chase the sets that I am close to completing and is a reasonable likeliness that I will be able to, harder than those of which I only have a few cards. I do like the older cards that concentrated on the subject, i.e. the sport and the player, more than the cards that of the last two decades that thought collectors wanted fancy designs and lots of colors. It has been often said on this site that collectors prefer cards with a full list of the players stats versus one line of stats. I wish the companies would go back to producing real baseball cards instead of the glitter cards they do today.
But the nice thing about the hobby, it is to each his / her own as to what he / she collects.
Bruno
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Check my Profile page to see my 2023 Goals and my Lists of sets near completion (5 cards or less) or sets getting close (less than 100 cards missing and 75% complete).
https://www.tcdb.com/Forum.cfm/Page/B/ID/0/?MODE=VIEW&ThreadID=25745&C=0