I don't think it is fair, but it is a tough question. Some people seem to "need" the government to manage their every move in order to do the right thing, while others make smart choices on their own.
Here's a case that happened in my part of the world just about ten days ago. A baby was killed, apparently unprovoked, by a pit bull that was a family pet. According to TV reports, the pit bull was pampered and beloved, not mistreated or trained to fight. The baby was only ten weeks old -- too young to walk or even crawl in the dog's direction. http://dfw.cbslocal.com/2015/04/20/infant-killed-i...
So no, I don't think it is fair to ban pit bulls, but it also was not fair to to that innocent baby to allow foolish parents to keep a pit bull in their home with a baby, and leave the two creatures unattended. I would never keep a pit bull in my home if I had small children. I know there are plenty of cases where pits are great and cause no problems with children or other people, but personally I'm not willing to take that risk.
It seems like pit bulls are so often in the news. Is it because it is more newsworthy when a pt bull attacks, so stories involving other breeds tend to go unreported? I just don't know.