From my own use case, integrating TLS for my site via LE and the autocert package in Go has been seamless. It's completely free (if you want it to be), and it looks like I won't have to worry about renewing certs anymore. The service LE is providing is amazing. Just thinking of the millions of dollars they're collectively saving everyone, yearly, is pretty crazy.
If anyone at LE reads this, thank you for your work!