So far this year my average gain per mile is 72 feet. I can't avoid climbing unless I load up my trike into my car and head out of town to take a ride somewhere that does't involve so much climbing. A local 20 mile ride means about a 1,400 foot gain and so on. As I've mentioned before, piriformis syndrome and a partially atrophied calf muscle (both post hip replacements) makes climbing a bit of a challenge.
I bought the ICE Sprint FS E8000 specifically for climbing. Being able to call upon the E8000 to get me over the hills takes away any climbing anxiety that in the past would have played a major roll in determining which routes or detours I would ride. Many are the hills I would not go down knowing I would have to climb them later. Not anymore.