Let's reflect for a moment on the concept of genuineness.
I'll paint the picture-
A friend that you happen to work with requests that any response to the question "How are you?" (which is a DUMB question anyway) that varies from good or great be met with a story about what's going on in your life personally.
1. I am trying to maintain a level of professionalism in the workplace. My personal tales, whether yay or nay, are not appropriate to expand upon on the company dime.
2. As my friend, why am I not allowed to say, "I'm just okay today."? You should not try to change my current emotion. As a friend, you should accept me for who I am. Please don't ask me to be fake. I have to be fake with all the other workplace acquaintances.
3. What is really comes down to is that YOU feel uncomfortable by my less-than-par emotion. So really it's a selfish request.
4. What if my emotional state is extremely fragile? By forcing me to open up, you have just instigated a waterfall of tears, sniffling, flushed skin which may or may not be able to be turned off- messing up my makeup, my focus, and my professional demeanor. Thank you for trying to make yourself feel better which has now led to completely outing my personal business to everyone in my workplace.
As my friend, please don't pry into how I'm really doing in my workplace. Save it for a rainy movie night, evening beverage escapade, or tearful phone conversation- outside of work. Some days I am just faking it to make it.