Post the evidence you have that the Echo is recording my conversations before the wake word.I've been a computer forensic expert for more than 12 years, traveled the world to train law enforcement, spoken about it at countless conferences including MacWorld, helped to design industry-standard tools used by all major law enforcement in the US and around the world, but yes, I'm sure you're the expert here. Tell yourself everything is fine and your conversations aren't recorded, if it makes you feel better.
This case is not the first, nor will it be the last, in which Alexa data is used
http://www.latimes.com/business/technology/la-fi-tn-amazon-echo-privacy-qa-20170105-story.html
Nothing in that article contradicts what I have said.