I used to be a PC gamer. I don't think my PC would have run Skyrim well enough to make it worthwhile getting it on the PC though, Oblivion looks worse on my PC then on the xbox360 so I went for the xbox version straight away thing time around. I have 2 xbox 360 standing around from better times, and don't have the money to upgrade our PCs in these (for us) much leaner times.
I have no regrets. the game runs as smooth as anything, it looks absolutely amazing and I haven't run into any bugs or glitches. The only problem I ran into was having so share my copy with my husband and daughter, but getting a second copy for my husband's xbox quickly solved that

I thought I might miss mods, but unlike Morrowind which had rather bad player/npc models this game looks amazing out of the box, and unlike Oblivion with it's weird scaling this game's scaling and levelling system with the perks is perfect, so I have nothing I want to fix with mods really.
I'm very happy with my decision, and will happily buy the next Bethesda game for the xbox 360.