I've read all the twilight books. Not because they were good, not because I was engaged the entire time, but for the simple fact that I wanted to know how it would end.

Why not just read the last chapter?

Because I wanted the ending to make sense, and the series kept throwing in new characters to cover up its faults, like how Christopher Nolan throws an entire orchestra to cover up lack of drama or meaningful dialogue.

Sometimes you just know you're in for a bad time, but the starting premise is interesting enough for you to want to know how it all wraps up.