Or if you had a fraught relationship with them initially, did things ever improve as time went by?
I've been married for 31 years.
The first 10 or so of those, my in-laws were not very nice people.
The next 10 years, we kind of kept a healthy distance.
I have noticed now that they are much older, they have mellowed in their ways and we rub along OK.
From my DH's perspective - he says (and I quote) he "won the in-laws lottery".