Enforcing a patent is a great thing to do! When you work to enforce your patent, you encourage the people you approach to "design around" it. This can cause them to develop better ways to do things, which makes our world a better place in which to live. Alternatively, if the people you approach don't want to do anything creative, and they prefer simply to copy your patented design, they must pay you for the privilege. That is only fair and right!