Those who are not into it, don't want to hear about it
Those who are, don't want to stop talking about it
And rarely will these two groups (of people) ever be found in close proximity of each other!
Let your instincts guide you; if you find that those around you (at work or at play) are comfortable in you talking about a particular topic, then knock yourself out. However if they appear disinterested or (even remotely) peeved by your ramblings then save it for those who will appreciate your words and are desirous of learning of your experiences. With property there are always forums and/or gatherings such as this site that help unite you with like-minded PI souls.
Wise words