FPS and RTS.
1. I cannot play it long and it give me headache.
2. I am not good at it.
3. It's repetitive.
4. Not much Story.
5. I will let you know, if I can think some more.
WoW, LOTRO and SWTOR. Got about 1k+ hours on each. But I am cutting back, because I do work now and most of my free time. I am very tired to even play more than 1 hour.