I've done rides where it is 25-35 miles to the gravel. I leave the house at ~70 psi, drop to whatever is right for the condition, then pump back up for the ride home. Doing 50-70 miles on 30 psi or less is work I just don't want to do. Not when I can ride in style for the expense of 5 minutes of pumping. (Granted, I might change my ways if I had to use a minipump.)