Primarily private. The club I am at is member owned and golf is the priority. Divots and ball marks are repaired, as everyone has a vested interest in the quality of the course. There are, of course, some bad apples that do not fix their divots and ball marks, but they are a small minority and it is addressed. Anything more than 4 hours and you are hearing about it. No club is perfect, but the culture matters. I am thankful to be at a club that takes tremendous pride in its culture and pride in the faculty.
I am also in an area with great a quality public golf system and get out to those courses as well.