Because a lot of people are writing their own to get a tool that they understand and can manipulate as they like. So they like to share them and see what other

Because a lot of people are writing their own to get a tool that they understand and can manipulate as they like. So they like to share them and see what other people have done to learn from. As a community we are still very far from coming to a consensus on what a good harness looks like and the only way, IMO, to get a good feel for it is to write your own.