Damn dude, I remember way back when.. I use to play the shit out of Super Smash Brothers on the N64 and then Melee on the GameCube xD. Good times... Good times...
You'll have a lot of bad moments in DMM that's with out a doubt true. But you'll also have a lot of amazing moments as well and believe me when I say it does get better even though you take a massive blow.
Newer players/Afk and mule accounts are really all that are dying to Suiciders. Aside from that everyone else just dies from misclicking in a guarded xD.... But good advise if people are not following it already!