I wanted to share the preliminary results with this group since there has been a lot of discussion on this topic. Given this response, it's possible that had everyone answered, your stats might be reversed.
Most people read unsolicited email at least some of the time.
Of the people who do take offense all of the time, more of them are women. I don't believe this one. The jury is still out on whether it should be regulated or not. Furthermore, surveys like this fail to take into account the environment. When you do a snail unsol mail, it's rare that recipients compare notes and discuss who the bums are, etc.