I had the same thought, but I suspect quality > speed for most people, and they don't print often enough to justify personal investment in a high-end printing hardware. For example, my wife and I like photography and most of the pictures on our walls are ones we've taken, printed on canvas or high quality photo paper. But we don't own a high-end photo printer, nor do we want to do the work of mounting canvas on frames. I've worked with such devices, they're not that expensive, but I just don't see myself buying a wide-format printer any time soon. I'd rather pay someone else to do so a few times a year. By contrast, I have been thinking about getting a new laser printer for everyday use and reading long documents - I don't enjoy reading everything on a screen.
I suspect that many people may end up owning a cheapie 3d printer for small things, but they'll outsource to a local hub when they want more than basic quality. I'm very into the idea of 3d printing, but the simpler, cheaper units are very limited - as evidenced by people at Maker Faires wearing plastic hats that they printed themselves. Home printing doesn't cut it for a lot of things; for example I use quite a few plastic implements in the ktichen but I would be quite hesitant to use home-printed kitchen implements of any kind.