Long. If I get into something, I literally want it to last forever. People might say, well then you'll just get a bunch of crap filler and a never ending story... but that's exactly what I want. I might be one of the few people who just enjoy watching stuff just to relax. Besides, I get to see more of my favorite characters this way. And yes, I don't get tired of formulas being reused over and over. :3
When a show ends, I'm really all like.. well that's it? Well that sucks.
Really though, I don't mind anime taking their time to finish. Like Pokémon for example. I know for a fact that I have something to watch every week and look forward to, foreverrrrrr.