I agree with you. I get the idea that business and pleasure should be isolated, but for me... 8 of my most-awake hours are spent at work, so I'm going to do normal human things. Some people I will like more than others. Some people will learn things about me that are an information-theoretical disadvantage for me. So it goes. You can make your life miserable if you want to, but it's also OK to be normal.

I used to be the "no fun allowed" type, and I wasn't really getting a lot out of it. Now I go to all the "fun" non-work events and have a great time. To each, their own, I guess.