If you're considering selling your sports that you love so dearly perhaps consider mothballing it and hanging it in the attic...out of sight out of mind...when the time comes that you move to a house that's no longer at the top of Mt. Everest you might wish you still had it.
I say this having moved from a house in a (almost) perfectly flat town to a house at the top of the only hill in the same town. I hung up my Single Speed about a month after moving in. I won't live here forever though...
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--Don't Panic.