For me this is tougher than a Yes or No question... unless we're talking a course I find POOR, not just average or bland.
When I was golf mad (ages 14 - 21) playing 50x and caddying 100x per season, it did not matter; nothing was mediocre, though something I hadn't played before (arcane, rickety 9-holer or private club of any sort) was a powerful lure over something I had already played.
When I was growing into life/adulthood (22 - 35), I was now at work in local clubs, and starting to appreciate design, I was also gaining the ability to play a lot of courses, but these opportunities of access, were balanced by fewer actual rounds (down to 30) And the fewer opportunities I had to discriminate by playing private courses, meant that, sure I'd rather play Sunningdale (which I've never felt outstanding) with friends, than Knollwood. And by the end of this period, it became a practical matter of blending/balancing whatever access with what could be done...Fishers Island, NGLA, Shinney, Yale are day trips...you plan for that and you eschew other local "mediocre" opportunities (4 pm tee-off at Wee Burn or something) to do that. So from the outside lookign in, you would say, "He doesn't play anywhere but the best." But that really wasn't the case in terms of sentiment.
For the last 15 years, I have played less than 8x avg per season (2016 and 2017, I played 3 total rounds/caddied 100+) and I will play anywhere it is easiest for three of four people to get together at the same time.
If that is one medicore course, so be it.