Regardless of whether society believes that growing and using Cannabis, which has been consumed for thousands of years, should be illegal, millions of people know of its many properties and use it regularly. It therefore makes more sense to help people do so properly, rather than consider them criminals.
It’s everyone’s right to alter their consciousness if they so choose. If you do choose to do so, especially for entheogenic reasons, you are opening a connection which can lead you towards a higher state of being.