What a great thread. :) My wife, Melissa, and I have been married 22 years so far, and there have been challenges as well as great joys during that time. More than once I've wondered whether it was worth it, and I know she has, too. But we've always managed to make our way through the tough times by the love we have for one another.
I think marriage is about extending grace, even when it is undeserved, and being thankful for it when it comes back to you as well.
Again, great topic, thank you for posting it. :D