Because it will run nicer, last longer, require less maintenance, and the power has a much wider range.
Me thinks more pressure, more HP, on the pistons, rods and bearing makes them live less, not longer
Cab most of them jump on them once in awhile maybe a few times a month, wax it, and go to a car show or car cruise. Should last forever and the car show guys go crazy over blowers and turbos. 😜