Servers with carpy levels or pillow-shaded character wads.
Servers with so many damn wads.
Servers with both.
Servers with dumb SOCs.
Servers with all three.
Servers with wads no one actually has.
Servers with all four of those.
Lag.
Hosts that don't know how to use a console.
Servers with the maxplayers of 2.
Co-op servers using no (good) coop wads.
Servers that lack special rings.
When people don't pause when it's lagging and the host owns everyone due to thus.
Lag.
N00bs.
Being banned/kicked for no reason.
People blaming me on cheating even though I am not Velocity.
Full Race.
Too many Match servers.
Not enough good CTF servers.
Egotists.
Lag.
People that whine since you are using mouse.
Flame when abusing CTF glitches.
Ringslinger Co-op servers.
Co-op servers where it is mostly chatting.
People who demand to know your name every time.
People who threaten to ban you since you are telling them to stop breaking the master server rules.
People who are general idiots.
Lag.
You know how long I can go on for? :|