Just, that "lifestyle" involves a whoooooole lot of work, stress, time and commitment.
I too have been mightily impacted (in a positive way) by many of those guys but the commitment (for the more popular speakers) is immense.
If you do a google search for "Chris Raymer's Schedule" you'll see the majority of his weekends are booked with speaking engagements. Some of my speaking "heroes"
(ie Mark Houston, Joe Hawk, Bob Bisanz, Sandy Beach, Don Major, Earl Hightower, Bob Darrall, Clancy, and so on) mention over and over and over in their talks about the tremendous pressure being a circuit speaker puts upon them.
It sort of reminds me of being Persident of the US. It "looks" like a cool job.......until you see the effects it has on the faces and lives of the ppl who actually GET to do it. .......and for us alkies......that pressure can put us on dangerously thin ice.