My experience is, after maxing out my lv 8 walls at TH8(3 months ago), I have no desire to do it again for lv 9 walls at TH9.
Maybe it is because of the low raidable loot in the system. The thrill of looting has been drastically reduced to a point that it no longer keeps me going for high level walls. At TH 9, bigger army camp = longer training time, harder bases, much more infrequent collector raids, high upgrade costs, these factors combined are not making the game competitive or fun. It is close to a pain-enduring experience.
I only log on for collectors. When a builder is about to free up I do some raids to keep it busy.

