It's pretty easy to discern what would constitute an 'awful ending' for you though since you've said who you wanted to win
I do actually do the same because most people on here are terrible with spoilers (especially in the X Factor section) but I know not everybody does and there's people like Luke who've come in on occasion to ask if the season is worth watching, it's difficult to do that if there's spoilers all over the place. Also for a show like this where it airs really early for Brits it's a bit different to coming into the US thread when people have been discussing it live