Do you design your own campaign worlds or buy one of the shelf (virtual or brick n mortar)?
I ask, because although I've had ideas for campaign worlds (or areas of worlds) the amount of time needed to build a world for play seems time prohibitive in my 40's - wife, kid, job, gaming in general - heck, even blogging - keeps me from having the time needed to homebrew a world.
It was different in high school and college, when I mapped out and designed three campaign worlds, but looking back - they're crap. I'd do things a lot differently these days if I were to do so, but I no longer have the time to do so.
So, do you home brew or use a pre written / designed campaign world, and if you use a pre written / designed campaign world, which do you use and why?