I wen5 on a machine for a couple of months ths, and felt no difference at all- which is another reason I suspect I didn’t have apnea- went for the sleep study and the tech said “yep, you have it bad. A cpap will make up feel amazing”- only it never did. I thunk my sleep recordings pretty much confirmed my suspicion too. My dad on the other hand will fall asleep in a chair, and he will snore and stop breathing quite often- he definitely has it, and needs his cpap.
When I first got it ~15 years ago, my son’s baseball team travelled to Kansas City for the weekend so I figured I wouldn’t bring it. Driving back to Omaha I almost fell asleep 1/2 dozen times to the point it scared me. I’ve only slept one night without it since & that was because because I threw a piece away & didn’t have a spare. That next day I drove to the pharmacy to get the piece because it would have taken a couple days via mail.
If you’re not having those types of experiences, I would agree a machine prolly wouldn’t help.