I'm going to set aside coffee quality for a second - because the truth is, the average consumer doesn't seem to care about this beyond a certain threshold, which judging by the popularity of these Keurig and Keurig-like products, the options clearly meet - and I want to focus on what it delivers.
What it delivers is consistency. You put a pod in, fill up the water as needed, and press a button. Rinse and repeat, and you always get the same specified amount of coffee. Its precision consistent. No making a big pot of coffee only to waste it.
Not to mention, its simple to clean up. Just throw the pod away. No grounds, no coffee filters, just pop the pod, and on to the next one.
As far as convenience goes, it hits all the notes.
It may not for you, of course, but the average consumer is still buying these systems and its only growing.
Given how cheap it is to make these systems, I'm really not shocked it went to the consumer relatively quickly and didn't settle as an office only thing.
Now, they are an environmental catstrophe, that is true, and thats a great reason to transition away from these systems