The problem with these doors is the complexity and the fact that a simple tree branch stuck in it would completely fuck it up. The complexity means that it will

The problem with these doors is the complexity and the fact that a simple tree branch stuck in it would completely fuck it up. The complexity means that it will break much more often than a regular door - it has motors and multiple pieces. Also imagine a child sticking a finger in it while it's closing, turning it into a meat grinder.