Having just replaced my door lock, I can assure you that they too wear out and need replacing. (one of the springs inside broke) The pricing on Let's Encrypt i

Having just replaced my door lock, I can assure you that they too wear out and need replacing. (one of the springs inside broke) The pricing on Let's Encrypt is literally zero, and they provide (also free of charge) the `certbot` utility which you can run as a cronjob and which will automatically renew your certificates for you. The whole thing comes extremely well documented and with install scripts that take less than a minute to download, verify and run. If you think even that is too much of a burden I don't think any topic in programming is simple enough.