How do you feel about love-triangles?

Personally I hate love-triangles, they're always don't just so badly. I mean there's always that obvious choice that's going to be made that only a complete idiot wouldn't get. I mean you know Bella is going to end up with Edward, you know Katniss is going to end up with Peeta, and you know Mako is going to end up with Korra (That one was REALLY STUPID! Of course the guy is going to choose to protagonist). There's no development between the other character that's part of the love-triangle and it makes them unnecessary. If you're going to make a love-triangle make both couples well-developed and believable, that way you'll really wonder who the character will end up with. They also ruin it because the character also ends up the first character they were with, it makes it too obvious. A love-triangle needs to be done better than it's always been done in other to be better. Please tell me what you think.