a lot of younger folks are impatient (past me included) and get suboptimal results for a lot of time spent, which puts them off of doing work themselves. the irony is of course that younger folks have all the time and none of the money. they are also the ones complaining the most about how expensive home/auto/whatever services are.
this will also teach you the limits of what you actually can and can't do, so that when you do spend money on a pro it's money well spent. they also prefer to do the more complex jobs (less customer overhead, setup and cleanup time eating into margins) so it's win-win. as someone above said, they're far more efficient at the actual work but you can't make a lift go faster or shortcut any consumables used.
