My office is at my house, but I'm out a lot seeing clients. Its nice to be able to roll out of bed and straight to work. Some days I don't stop for a shower or breakfast until about 10:30 or 11, and I like it that way. I also typically work past 5, and some days are quite a bit longer than 8 hours. Right now, I wouldn't trade it for a separate office. I'm taking a break from tweaking some web design right now, and I'll be able to go back to it when I'm ready to.