"None of your friends are doing anything remotely like what you are doing," he said. "You lose all common ground."
I know I feel like that sometimes...
or like Hugh MacLeod Said (http://www.gapingvoid.com/Moveable_Type/archives/003642.html)
"Once you become an entrepreneur, you find the company of non-entrepreneurs a lot harder to be around. Youve seen things they havent; the wavelengths alter, its that simple."