I used to.

I feel sorry for you then. Assassin's Creed multiplayer is the worst I've ever seen.

I will on occasion. Sometimes I just troll though. (See my YouTube channel for an example. GabeSalamander's the name.)

I used to when it was a thing. I loved it so much. I'm usually pretty average in PvP games but in AC I was god-tier. Always in 1st or 2nd place. I used a lot of rage inducing tactics that never outright killed enemies but always put me on top. My favorite combo was in AC4, tripmine and chasebreaker trap. When I had 2 or more players on me, I would go into the middle of a chasebreaker hall, put a tripmine by one door and the trap on the other, and just wait for my enemies to come. 9/10 times they would either die to the trap or get stunned by the tripmine where I could knock them out. So much fun. But truly, I miss the brotherhood multiplayer the most. I wish they had never taken out the chase sequences. It was so incredibly fun to escape from enemies and hide in plain sight until their chase timer ran out. Now they can run around with much less caution, it's not as stealthy for them. Alas, that multiplayer is gone.