This is a good topic. I think we all have various situations and come from varied backgrounds. There are couple of points too consider, one of which that has already been mentioned is that there are those that do not have our bests interests at heart. When combined with the fact that a malicious person, with either some knowledge of how communication technology works and/or with access to a substantial amount of money, could potentially wreck your life by understanding who, what or when you were communicating. Phone records, email, etc. are all files stored on a computer that someone could have access to. Related to that is the other point that some may find themselves in the situation where close family and friends are people that are extremely conservative with regards to this issue. Such persons would never understand or be accommodating of this behavior. Therefore it is wise to take one's time, and give time to think through the ramifications of coming forward so freely. The other thing is that people may initially be friendly but can sometimes turn hostile. When hostile they could use information they know about you to harm you.
Just saying some things that should be taken into consideration.