I've been using Letsencrypt since the beta and I enjoy it for the simple reason of not having to get private keys via email (remember the times before LE?). So

I've been using Letsencrypt since the beta and I enjoy it for the simple reason of not having to get private keys via email (remember the times before LE?). So far, I had exactly one frustrating moment with LE (or was it certbot?). I've created AAAA records for a domain, but didn't set the nginx up to accept IPv6 connections. Certbot failed to fetch the certificate with some strange message. I figured it out. It was not that bad. Letsencrypt is a blessing.