For ages, I rebelled against the Certificate Authority trust model, which I perceive as a racket. Let’s Encrypt essentially plays the same game, but with slightly different rules.
I believe privacy is important. It’s not everything, but it’s important. Encryption is a tool that attempts to implement digital privacy, with varying degrees of success. Algorithms can and often do have flaws and crypto is hard. Really hard. Or so I’m told. Or the encryption is circumvented instead, which appears far more common. Even so, this here is about the best we’ve ever had it. Let’s Encrypt provides anyyone with the means to enable modern SSL without monetary cost or painful renewal processes.