Yeah,
Classic glass half full discussion.
I've been doing this since '92. Not full time on the road but a good 100k/year domestic US, so a bit on the gerbil wheel.
It's all about personal balance. The reason it works for me is:
1) I enjoy the work I do - both at the office and on the road
1) We enjoy using the points to go places and see things we might not have done otherwise.
1+1 does equal 3.