[dreen]

From one side you are correct and entitled to be able to do that. From another, and IANAPsychologist, I doubt the psychological effect of trying to emotionally isolate yourself from people you spend most of your time with is positive.

[JohnFen]

I am a huge believer in keeping my personal life as separate from my employer as I possibly can, for a whole host of reasons. I may technically spend a lot of time with my coworkers, but we're working, not socializing. My coworkers are acquaintances, not friends.

That's not the same as being emotionally isolated. You still (presumably) have friends and family.