I like: food,
when stories are scientifically and grammatically accurate
figuring out the end of a mystery before I get to it
sweet romance that doesn't stain the whole book or get too ... much
fixing errors to make the work better
when I foolishly assume that when I read published things they should use correct grammar
logic

I dislike/loathe:
unwanted arrogance ( those people!)
realizing that I never figure out the end of the mystery correctly 
realizing that if I was the detective the murderer would have gotten away with it
when a series is ruined forever because of a major character's emotions
INTENTIONAL errors 
giving up
when people feel compelled to act differently due to foolish social pressures
continuous superficial conversations