I often feel like I get disappointed in things far less often than most, and I have no idea why that is. I think it's most obvious when it comes to TV shows or book series. People will sometimes complain over certain aspects of the series, such as the ending, and I'm usually perfectly fine with it. It's weird that it tends to happen more with series than with movies or stand alone books. I think it's because I get so wrapped up in the series and so attached that it becomes harder for me to recognize flaws. I just focus on all of the positive things instead.
I'm not sure if that is a good or bad thing. After all, is it good that if one of my favorite series does something I may love it, but I would be put off by the same thing in a movie or stand-alone book? I guess it's something that doesn't really matter, even if it means that I'm more forgiving of series when I review them. I kind of like it to be honest. It means that once I get into a series, it's harder for me to become disappointed by the series. That doesn't mean it will always be the case, but typically speaking I'll keep enjoying the series as long as it lasts.
I've never understood people who can stop a series before finishing, whether that means not reading the next book or stopping watching a TV series. I get way too attached to do something like that. Once I've started, I'm going to follow through and see what happens. I can't think of one series that I've ever left unfinished (unless we count the ones I'm still in the middle of). Between the characters and plotline, there's always something that I have to see through to the end.