I use Win 7 Home because there's absolutely nothing wrong with it and I don't have any need for any of the features of Pro or Ultimate, so there was no point in paying more. It's only a problem now because if I were to upgrade to Win 10 for free, it'd be Home, and thus complete shit, because fuck Win 7 Home users apparently.
I'm hoping they change a lot of things on Win 10 Home. I intend to get the free upgrade before the one-year window is up. It'd be nice if I could actually use it at that point.
I do remember seeing something about a discounted upgrade option from Home to Pro for Win 10, but there were no details (pricing is important). That's a possible option.