Some software maybe, like aerospace, but I have the option of not going to a doctor and trying to make myself healthier, so I should be able to write software also, and if anyone else wants to use it, that's their choice,

Aerospace already has software standards for certification like DO-178C which is critical for certification from the FAA. You don't have to be licensed to write the software, but if it doesn't meet standards required for certification, well you have to fix it.