I don't really care. I mean, I trust in the endings I planned are how my stories need to be ended. There will alway be someone who has an other idea how your story should have ended, you can't meet everyone's expectations. The most important is that you be satisfied with it. If your readers like your story, they will accept it, or what is even better, talk and think about it's ending, and their opinion about it.
I'm more worried about the middle of the story I'm planning. I couldn't figure out yet what should be there