I used to split time between home, my company's HQ and my client site and I found that challenging but invigorating. I'd be most productive at home and less so at the client site and HQ but I got more of the socialization outside of the house.

So now, working at home exclusively, I'm being productive but haven't talked to a couple people who are directly involved with my projects in 3 weeks. I'll try Skyping and video chatting but those are generally poor approximations of being in the same room with someone and being able to just shoot the shit on whatever comes to mind.

Then there's the kids aspect right now, which basically has my wife and I both working an extra 4+ hours watching the kids while the other partner works.