I switched to a System76 Lumur last year after 5-6 years of MacBook Pro. The biggest adjustment for me was the battery life, it’s not terrible, but I remember I never had to think about charging my Mac. Aside from the flimsy hardware I can’t complain about anything else, I certainly don’t miss macOS and I’d take Linux over it any day. The price is a factor as well, I got a maxed out system for half the price, in another year I can buy a brand new System76 and I would have spent the same amount a MacBook Pro costs. Having said all this, I do miss the MacBook hardware quite a lot.