People are always striving to be the best in any way possible, even in ways nobody would think of normally playing. You can see that playing any game. Now, others may not care who hit the highest trophy mark as a TH7, but TH7's care.
There's probably a guy playing Clash of Clans right now who refuses to use wall-breakers, and is trying to be the best at breaking through checkerboard bases without them. You may find that silly, but I find that interesting.
To me, any motivation is good motivation, even if it's just motivation to be the best TH6.

