There are many many worse places to have to spend an evening. 
An off path ascent gave us plenty of intersting ground to cover and new navigation skills to learn. 
A lovely laze about in the sunshine enjoying the breeze, chatting kit, land management, future adventure ideas. Then a wander up to the summit to watch the sunset. 
These moments of awe and wonder, folks literally seeing things for the first time, space to just be, are 100% why I do this.

I settled in for a lovely long sleep, glad I went for the bivvi option, with nature's starry nightlight.