What are your specific quirks and habits with collecting?

[Rookiemonster]

I pass on almost all relic cards now especially non gameused .

Autographs of guys with advanced age (Stan Musial) . One they signed a ton of crap over the years, two it's sloppy the closer they get to the end .

Base Rookie cards that are issued after that player already had a rookie . A year or more ago . ( it's a joke )

Vintage I also enjoy collecting cards that have been loved . I don't like completely miscut card . You know when the boarder is only on two sides.
Writing on the card is most often a deal breaker ( unless the price is right ) .
More then one big crease in the center of the card .

I once was in a trade with a guy that had a 1952 bowman mantle . It was missing the back . He also had a 1950 bowman Jackie Robinson missing the front . He kept trying to throw them in the deal . Like hey you can say you own these cards hahahahaah. No I can't half a card is not owning the card .