In my current position I work from home often. Most of my work can be done without incessant meetings and constant interruptions, so I just sit here in my home office and do it.
Many companies suffer from an outdated idea that if you aren't keeping their cubicle warm, then you aren't working. For modern information workers, that's simply crazy. As long as you are getting your work done, who cares where you do it from?
Many successful companies have discovered that opening up their remote worker policies allows them to secure better talent at lower costs than does the old model of forcing people to pack their families up to relocate and then spend an hour per day trapped in traffic.