A summation of everything I dislike about Marvel/DC, in no particular order:

events
reboots
writing for the trade
deconstruction
tasteless deaths/rapes/incest done for shock value
Greg Land-type artists
sliding timelines
resurrection of characters who should’ve remained dead (Norman Osborn/Aunt May/Barry Allen/etc.)
bad characterization
the illusion of change
nostalgia for the sake of nostalgia (single Peter Parker; the return of Krypto; etc.)
interminable title relaunches

The Big Two reached their peak in the Bronze Age/Copper Age. Everything since has been a downward spiral into stagnant, exploitative gimmickry.