It's also why I never read reviews or check out critics... if it's a movie I really want to see I want to see it for myself and make my own decisions about whether or not I enjoyed it. I think too many people rely on and/or believe whatever some critic has to say and will go on that rather than trust themselves. They say stuff like "hey, I'd rather listen to what they say and if they didn't like it and save two hours and $20", which I think is sad.
There's risk in everything, if it's a movie you want to see then just go for it, if you're on the fence I still say go for it, but if you just don't plan on seeing it then go ahead and spoil away.
Art is art, be it movies, music, literature, etc and it should be up to each individual person whether or not they like something, not basing it on what others think.
Trying to be spoiler-free is kind of fun... and empowering. Like, "oh look, a commercial for Terminator is just starting" <changes channel> "ahhhhhhhh..." I almost get an adrenaline rush cuz it's not really an easy thing to do when you're really interested in something. BUT THEN... seeing the actual movie and being almost completely unsure of what's going to happen is even more thrilling.
My biggest challenge and Holy Grail will be trying to avoid spoilers for The Force Awakens. There's just too many social media sources where people will blurt stuff out without thinking. To make it worse, I play the Star Wars MMO "The Old Republic" which is all about that Star Wars. I may have to /ignore the entire game population two months before the movie comes out.