My hubby's snoring depends on how much he's had to drink, and whether he ends up on his back. Usually, I just roll him back on his side and he stops.
On the other hand, he often has to roll me back the other direction because I'm snoring in his ear! Of course, he's kind enough to call them 'sleeping sounds'. It's related to weight, wine, and the condition of my sinuses at any given time.
My mom did the CPAP machine for sleep apnea. She had been tired all the time, and my Dad wasn't getting any sleep worrying about whether or not she'd start breathing again. I think she had it for a couple of years before Dad started complaining about the noise the machine made, so they're back to where they started, but she's exercising and losing weight, so hopefully that'll help.