Why not...
I'm 31, 6'2" and about 190-200 lbs. I'm fairly fit and pretty active. Have a not so great back from 10 years of throwing freight. I can ride all day only stopping for fuel, but I prefer to stop every 100 miles or so for a break to stretch and walk around a bit. Makes the destination not so painful.
I currently ride on stock air shocks with a mustang wide tripper solo. I bought the seat with a slot for a backrest and didn't buy the backrest. Never tried one honestly, just figured I might like the option down the road. Longest run on this setup was 400 miles, and I feel I could have gone further if necessary, but I was happy to be done.