I hate inventory management.
I’m not talking about retail, I’m talking about the “game” mechanic that exposes the hoarder in all of us. In most computer role playing games, your character(s) have a limited inventory space in which to carry all of the shiny things they find in that dungeon or abandoned space mine. It evolved from the rational mechanics of tabletop Dungeons & Dragons which places a limit on the amount of weight you can carry. It was annoying there, but computer games have taken it to new levels, and it rarely involves actual weight anymore. Here is more about it on TV Tropes… but follow that link at your own risk–you could end up browsing tropes for the rest of the day.