I've used it at work, but that was to satisfy a requirement for encrypting/signing software we distribute. I don't use it at home.
IMO there's a certain level of paranoia that is appropriate for personal use, and I have not yet crossed the line into believing that I need GPG in my personal life.
I do, however, tend to use encrypted tunnels to SOCKS proxies that I personally maintain if I web surf while on the road, if I'm doing anything more sensitive than looking up Google Maps directions to help me find the place I want to go to for dinner. So I suppose I'm more paranoid than your average smartphone or public WiFi user, but less paranoid than your average GPG user!