Yes, that happens to me pretty often actually. You see, I get embarrassed easily so when someone does something idiotic, embarrassing, or awkward in a movie, book, etc., I many times slam my computer closed and literally run away. Then, usually anywhere between one week and a couple of months later, I will try to pick it up again while telling myself over and over that this is complete fiction. I have around a 50% chance of overcoming what was bothering me and continuing.
Besides that, once I get past 200+ chapters into a manga or anime, I tend to get bored and decide to stop but usually I come right back anyways and drag myself all the way to the end.

Has anyone been reading a manga or watching an anime only to decide, no I'm done with this only for the next chapter/Episode to come out and you are drawn right back into it?