The people who mock don't do it out of 'ego' they do it out of fear of the unknown, or jealousy because they can't do it themselves.
I began meditation about the same time I began Aikido, though not in any way connected, and have had some very interesting experiences. My biggest problems comes from quieting my conscious mind in order to let my intuitive/instinctive mind come to the fore. I haven't experience any of those questions though. Just a mind full of everyday clutter which, in my current inexperienced state is difficult to shut out!!