"I don't have the time to be mowing these lawns twice or running around with a backpack blowing off clumps of grass. "
Funny how you find time to stop, empty the bag, load the truck, stop, drive to the dump/transfer station, stop and wait for the attendant to finish picking his nose, et al.
You will probably find, as I did, that the occasional double cut (only areas that need it) or quick walk around the yard with a blower takes less time than you are already spending handling clippings.
Yesterday is a memory. Tomorrow is a mystery. Right now is your reality.
(Thx to GB, RIP)