Why do folks not understand ohm's law?

[fastbaja5b]

Ok I accept that if I go from a 4s to a 6s and not change anything else Amp draw will increase as will top speed (naturally) however as I gear for 40mph if I go to 6s and then gear back down to be around the 40mph mark, my amp draw will drop and as such my motor will run cooler. (I can also choose a lower kv motor which will give me more room to move and not run the risk of undergearing a high kv motor to stay around the 40mph mark)

Or am I WAAAY off the mark.