It's boring, if you have kids it's hard to stand still and do nothing for two minutes you're trying to get them out the door, it requires several minutes of wai

It's boring, if you have kids it's hard to stand still and do nothing for two minutes you're trying to get them out the door, it requires several minutes of waiting for your hot water kettle, it's yet another thing to clean which people don't like, some people like variety every day and wouldn't go through beans quick enough before they went bad. There are tons of reasons (though personally I'd use an aeropress if I drank coffee at home too)