Parts of a game that make you not want to play it ever again

[Chinese Bootlickers]

Dead Money on higher difficulties/Harcore/with difficulty increasing mods.I love having everything crippled and getting attacked by a dozen spear chucking ghost people that take off half my health with every hit.

[Hattai]

The Colosseum boss in Secret of Evermore, at the time I didn't realise you could charge and throw the spear you get just before and ragequit after trying to stab him to death.

[Ferocity]

Pretty much any unskippable cut scenes or drawn out scripted events, unfortunately I can't think of any specific examples right now.

You basically described Final Fantasy X for me. I really love this game, but for me all those unskippable dialogues make it not the best game from Final Fantasy series. Especially that dreaded first part of game and Guadosalam.

[Xykotic]

Collecting the 3 "keys" to the Temple of Time in OoT.

Hated playing as a kid.