Some people answer an advertisement and want to meet on THEIR TERMS and if one asks for some confirmation of identity, they drop you like a hot prick (BRICK) thanks but no thanks, I have been hearing about time wasters recently : well these people are time wasters, because they ask everything about you, but will not tell you anything, or even speak to you on the phone.
So you think your time is being wasted -
well to avoid that feeling, just prepare and pass on at first contact a text to say you aren't prepred to take any time at all to put others at their ease - that way you can be sure that you only proceed with people who have the same attitude.
good luck. you will need it
Just my tuppennethworth...
Trust is a two-way thing. I can easily understand why someone would want to know everything about you while revealing nothing about themselves, but it isn't realistic. In general, I don't think people should ask any question they wouldn't feel comfortable answering themselves.