I agree with most of what you said, but I'd definitely say my grandparents are made for each other and very happy together--small and frequent back and forths notwithstanding. But if you got a different impression, I'm responsible for that and the way I presented it in my story.
I don't think there's an entirely right answer. Both ways of living our lives comes with pros and cons, so I think a person should just do what they feel. We'll never know what things would be like if we chose the other path, and we can only live life once (at least according to my beliefs), so we have to follow our heart and do the best we can.
Great comment! Thank you for sharing your perspective. All the best to you!