Hold it right there! I can't let such idiocy pass. The "happily ever after" kind of ending isn't boring because it's happy. It's boring because it's half-assed. No, it's even less than that it's quarter-assed. "I've told the story of dragons, swords, magic, adventure and action, but I don't know what would actually make my characters happy, so I'll just put the cliche at the end." Useless hacks! They shouldn't be allowed anywhere near the sacred tools of story telling.
Happy endings aren't boring when you do them right. Show that you truly understand the characters you've created and give them the happy ending they've earned and it's awesome.