What were the bumps in long term marriage?

Whenever people from a long-term marriage proclaim their success, they always take the time to say something like, "Oh, we've had a few bumps in the road," or "We've had our ups and downs." I'm curious, what were your ups and downs in a great marriage. I assume it was something that could have been major, but was worked through. I'm assuming it was more than arguing over your favorite tv show. You don't have to go into great detail, but I'm generally curious about what the typical ups and downs of a good marriage are.

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