However I'm
having a bit of trouble reconciling this desire with my concern about
CO2 emissions and climate change.


There are many recreational activities that probably have a smaller CO2
footprint. However, these things are awfully hard to calculate through
to the end. And then there are all other kinds of other possibly
negative impacts for any human activity: pollution with other stuff,
somehow indirectly furthering poverty in Africa, exploiting cheap labor
in India or China, whatever.

In the end, if you think it through, all recreational activities are
superfluous with regard to ecology. Where do you want to stop? That's
something only you can decide.

--
Thomas Borchert (EDDH)