Time to get into the only "drink at home" principle. I have to admit, we have several friends and locals who often visit us, seemingly primarily for our coffee. Got a visitor coming tomorrow, they’ll get a taste of our new Deadly Sin blend. Won’t say anything, just ask about how they like our "new" coffee.
The same reason I go to the pub instead of drinking at home! Because that's where everyone else is drinking 😆
I guess for a cafe there's also the benefit of not having to cook. I don't often find anything in a cafe that I couldn't make better myself. And by better I mean more in line with my own tastes, which aren't necessarily objectively better.
I fully understand the social aspects of your comments. That said, your coffee made from your own machine will be a bit more personal and need to be as best as possible aligned to your personal taste.