I also have difficulty talking to family or friends about ER for the same reasons others have stated. So few are doing it that the topic is foreign to most. That's why I love this forum
IMO, talking about ER at work is particularly dangerous. Most people at my Megacorp who are within a year or two of retirement start chatting it up with co-workers and before you know it, they're accused of "retiring on the j*b" even when it's not true. I think it's mostly jealously and resentment.
A couple of times it's backfired when the person decides to work for an extra couple of years but by then their reputation is trashed and no one thinks they'll put in the effort.
My plan is to retire around 56 or 57 but no one at work will know that I'm leaving until after I file the paperwork with HR. I look forward to my co-workers's reactions and will be interested in seeing how many are sincere good wishes vs. jealousy or anger.