Travel the US and see the sights by RV or by Plane.
Super easy - I would want to go via RV! I'm not a fan of flying so RV life would be my life if I were to want to see the sights around the US. That would have been a fun thing to do when we did our driving trip to Moab, UT. If we had more time during that trip I would have wanted to drive to Zion National Park and possibly visit the Grand Canyon. Oh well.
Maybe one day when I'm no longer interested in staying in one place we'll hit the road. Until then I'll just live vicariously through other people who find great pleasure in travelling by RV. I know more than anyone would ever guess.