Many people do not allow email contact because they do not want a lot of SPAM
I am a liberal. I no longer allow email contact because I received too much SPAM when I did allow email contact. I was buried in useless time wasting SPAM and I got tired of that very quickly.
(Edit I checked your profile.
I see that you do not allow E mail or Instant Messaging either.
If you do not allow Email, why are you complaining about other people that do not allow Email?
It sounds to me that you are living in fantasyland.