Canceled seasons and cliffhangers are my biggest pet peeves. They bother me enough to just avoid animes that have been canceled or abandoned all together. I can't really get into manga like I can with anime so the story isn't really concluded to me without it.
I am into really lonnnng animes and I love binge watching them. One Piece is my current obsession. I started OP in the summer and I'm about to get to episode 500 soon, probably by the end of the year.╮(╯▽╰)╭