My mom once gave me relationship advice that I think applies here:

You need to marry someone who you both like and love, because there are going to be some days that you don’t like him (or her), and that’s when you love him. And there’s some days you won’t love him, and that’s when you remember you like him. And there’s going to be some days that you don’t like or love him, and that’s when you remember you made a commitment. 

Most likely, you’ve heard that advice before. It’s maybe the most said writing advice ever. And there are many reasons for that, and many good things that come from taking this advice. But there’s one benefit that, to me, seems to be overlooked.