I still remember the original announcement around LE and thought "Great idea, no idea if they'll be able to get buy-in from browsers/etc", now I use it on all my self-hosted sites and will probably be transitioning my employer over to it when we switch to automated renewal sometime next year.

LE has been an amazing resource and every time I setup a new website and get a LE cert I smile. Especially after having lived/experienced the pain that was SSL/TLS before LE.