Reading through the thread again, seems like a running theme is a bunch of people who've collected lots of SMT games without beating them. I didn't really think I'd be in the top 10 or anything in terms of number of games where I've seen the credits, but I kinda think I am!
Here's my list in the order I beat em:
Revelations: Persona, SMT3: Nocturne, DDS1, DDS2, Raidou 1, Persona 3, Persona 3 FES: The Answer, Persona 4, Raidou 2, Persona PSP (Snow Queen Quest + Sebec Route), Strange Journey.
So that makes 11 (9 if you don't count the new content in the ports I suppose). I like every single one of the above games except for the Answer.
I'm about 30 hours into Innocent Sin, (SOO GOOD) and plan to beat it soon. There are only two Megaten games I've ever given up on. Devil Survivor I lasted until Day 3 before realizing I wasn't having fun. I planned to return to it anyways out of grim determination but lost the cartridge during a move. SMT:Online is something I will try out again when I get my new laptop, but honestly, I think I hate MMOs so much that even Kaneko can't make it work for me.
Anyways, who's got me beat? Aeana and CJ obviously demolish my paltry 11, maybe Seks too, but I'm just curious if the average Megaten fan collects games or actually beats em.