When I am grounded due to weather, I can continue my trip.
When I arrive at my destination, at a small airport in middle of nowhere, I don't have to figure out transportation.
So it's really not about going back and forth, it is about making your plane usable in a few extra cases.
As an aside, I enjoyed how these people got their gyros to Iceland: https://www.youtube.com/watch?v=TmwEbjzLtDo
When I am grounded due to weather, I can continue my trip.
When I arrive at my destination, at a small airport in middle of nowhere, I don't have to figure out transportation.
So it's really not about going back and forth, it is about making your plane usable in a few extra cases.