Only coop. I got burned out on stupid MP in games about 5 years ago.
From around the time of Q3A's release in early 2000 until around 2003 I spent time online in games like MOHAA, RTCW/ET, BF1942/DC, BFV, ST:EF, NOLF1/2, Joint Ops/Escalation, Jedi Outcast, and Jedi Academy. I might have forgotten a couple...
Anyway, by 2004 it seemed like all the "normal" players were gone. All you had were the clans and the cheaters (sometimes embodied in the same group!) and the fun was gone. Every attempt I've made since then in playing MP like that has had the same experience, including most recently Red Orchestra.
Now all I want is good coop for playing alongside a few people I know. Give me the ability to have up to 8 people vs AI and I'm good. I was driven off by the mass immaturity of public servers and I'm not going to bother joining some clan.