It looks like you are using an ad blocker. That's okay. Who doesn't? But without advertising revenue, we can't keep making this site awesome. Click the link below for instructions on disabling adblock.
Freedom and exploration is one. Being able to zoom around an entire mountain with few limits to what you can do.
The adrenaline is also great, a reason for liking any extreme sport.
And then it's the lifestyle, which I don't have permanently but get to experience every time I go on a trip.