Having started out in gliders and moved over to power once finances allowed, I can see both side of the argument. I'm not a team player so gliding isn't for me, though I have my fondest flying memories from flying gliders. I do miss the challenge of soaring but I don't miss the avaerage day which consisted of the pushing gliders about, getting looked down on becuase of being a youngster with low experience, etc etc.
I would love the challenge of soaring again and would love to do it in a motor glider so as to not have to wait around all day for a 5 minute flight from a winch launch.
In fact, I have been know to throttle back my current plane until its sink rate is similar to a mediocre glider and then go thermalling until the CHTs start to drop below minimums, at which point its time to think of something else to entertain myself.