Just wondering, does anyone really use or care for a cellular connection for a tablet?

Pretty much what still said. I dont tether as of now (My Evo Lte is only on Sprints slow ass 3G ATM), but I would if I had Lte/HSPA+. Even then if I'm watching a youtube video on the go, a 4.6 inch screen would be enough for me anyway. I mostly just use my Nexus as a replacement for my evo to save battery (Play games, play music, etc).
 
I either connect it to my home PC or my workstation at work via USB and load up any music, movies or study materials. And when I am actually using it at either of those locations I have WiFi that gives me the access I need. When I travel I have pretty much whatever I need already on the tablet. If I had the option to buy my Nexus 7, or one with cellular access at $100 more, I'd still choose this option. If I absolutely wanted to, I could tether to my work phone, but I'd only really do that for location services or to browse, but I've just not been in that situation to need that.