I set up Linux dual-boot as well, around half a year ago now. But I made (Mint) Linux the default boot option; so that when I turn on my computer, I get 3 seconds to interrupt it and choose Windows - otherwise it just starts Linux. And just like that, I've never used Windows again. There just hasn't been any need or desire.
If someone is setting up dual-boot with the hope of maybe switching to Linux, I'd say it's import to make the Linux boot option the default. Otherwise they'll still just be booting Windows most of the time out of habit, and never make the switch.