I got sick of all the DLL injectors and .INI hacks in Tribes: Ascend. You never know who's a scumbag with a rate-of-fire or sparkly player cheat or hitbox cheat or whatnot...
Bought Titanfall to try something new. It plays just like the FPS I hate - Call of Duty series. You get killed in 0.2 seconds by someone who may or may not be using a hitscan aimbot.
Quake Wars' mechs felt better than those in Titanfall. They also looked magnificent and handled better. They even had a prone mode. And Quake Wars had jetpacks, like Tribes. Quake Wars' depth of mechanics always kept cheaters at bay, just because the game wasn't simple enough to be easily exploitable.
It was my perfect online FPS. I mourn its demise. Oh, how I mourn it.