I realized that I've never voted on this thread before, so I took the time to do so now. Reading the original question, and how the answers are worded, it seems this poll is slightly flawed. The answers could have been a bit more detailed and the ability to vote for more than one should have been offered!
I voted for "out of control" to the question "What makes tentacles so damn fetishable?" My idea of that answer stems from the animated (or still-shot drawings) porn. I love it when the scene is "out of control!" Of course, the "being raped by a nameless monster" is part of the attraction, too. I don't want the tentacles too phallic-like, though. I don't want the appendages to look like cocks.
I've seen porn where the "monster" is an alien, a demon, and even some kind of plant that has come to life. LOVE. ALL. OF. THEM! lol
Anyway, just wanted to give this thread a lil' bump and breathe new life into it.