Good reply NESCHULTZ. The Echo is NOT recording conversations. I'd worry more about the computer camera or a television set if I wanted to get paranoid.
One thing we use it for is to add an item to our shopping list. When we are working in the kitchen, behind the counter and we need an item it is the simplest thing to just say, in a conversational voice, "Alexa, add this to my list" and it is done. When shopping the list is always on our phone using the Alexa app.
Alexa has an option to order products online but it can be turned off.
We have a Verizon hot spot in the camper so it is always ready to perform.
Want to know movie times? Ask Alexa
Temperature? Ask Alexa
Restaurant hours? Ask Alexa.
One of the best Xmas presents we received.