Barista here, I do latte art even on the to-go orders for two reasons;
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Practice, it’s a lot less stressful to practice new techniques or variations on latte art when you know you’ll cover it up with a lid, so who cares if it’s messed up?
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It’s fun!
Unless you’re buying used (or you really know what you’re doing), you’ll get way better coffee out of the Aeropress than the espresso machine for that price
Of course, the point is moot when you could make coffee just as well in a cheap plastic Aeropress.