I cant hate a pin, Ive tried but I cant, I know I have some kind of dissorder hahahaha.
I always find a reason to buy/keep a pin:
Raven: have to love the cheesy art, its like a bad cheap direct to video movie from the 80s.
Popeye: love the sounds and DMD.
SF2: At first I keep It for the theme, then Ive found a very fun Game to Play with friends and being drunk.
Freddy: what a nice toy and sound, and keeps non playing Friends interested cos the multiball its easy to start.
Genesis: WTF, love the music and the toy, sure playfield is simple, but not easy at all.
Bally Lost world: the cab/pf/BG art is just great, and when you need to clean your mind, and easy set of rules and some easy good shots just helps.
Im mental, but I can always find a reason to keep and Play almost any pin.