Do you ever

I used to ask that same question before we had all the gadgets where we can now see each other over long distances when we talk to each other. There are both pros and cons. All I can say is "beam me up Scottie."

You're a weirdo.  No, I am kidding.  I wonder a lot what the people look and act like, and what their surroundings are like, but I don't dwell on it.  A week after posting this answer, I decided to give posting my picture a try.  So, now everybody can see what I look like, kind of.   It's a low resolution picture.  If lilly is not afraid people will recognize her on the street and come up and ask questions, why should I be?

By the way, I edited this answer and took out a couple of comments including one that angelkiss referred to.  Sorry for the confusion.

Yes! I do that all the time...I really love the way the Internet able me to connect to people on a strictly intellectual lever regardless of age, gender, looks, location and so on, but at the same time my mind does try to make up those details.

I do have a photo in my avatar, so no one needs to imagine anything... 

yes,i do...i always wonder who i am talking about..and i agree with profitbob,we all may be disappointed at what somebody looks like,so i like it just imagining!