I figure it’s about how deeply you enjoy something that makes it a hobby. If you buy a mechanical keyboard because you need a new keyboard, it’s not really a hobby to you. But if you want to build your own keyboard, or like hotswapping, or making artisan keycaps? That’s a hobby.

Same goes for coffee. If you drink coffee because it’s your daily routine and preferred beverage, not really a hobby. But if you’re roasting your own beans and have a dozen ways to prepare it, then that’s getting into hobby territory.