There's nothing wrong with it, for someone with the time and physical ability. But I imagine he made these for people who are in a rush, or don't have steady hands.

[Kaveh manages, barely, not to smile at her huff. Ohhhh that's an ongoing argument, huh?]

Personally speaking, I have these at the cafe because I can't serve everyone individually. But they're not in my house.

[Kaveh is a massive coffee snob and he WILL be hand-grinding his coffee every morning thank you.]