What is the average time you spend thinking about a move?


Varies, often not enough time.
Sometimes 15-30 seconds, but mostly 30 seconds to 2 minutes.
Sometimes up to 5 minutes as I will view a position and not move but return later to view the position again before moving increasing the total time spent.

hmmmmnnnnn
in the opening , If its a line am familiar with, I would say 5-10 seconds until I spot something out of the norm. then I approach the position like a puzzle.
at this point its like 10 minutes for the specific position.
in the middlegame, its about 2 mins per move. Again untul I spot a position I would want to exploit.
in the end game,...... what endgame?? am normally taost by then or my opponent has resigned by then
;-)