I love mine, use it all the time. Just acoustically wise, it's actually a very nice speaker considering it's size. Ours is set up in the kitchen - in the morning I come downstairs and say "Alexa, play (local radio station)", and there it is. When cooking and I want to listen to some Motown or something, I just ask it and it plays. Need to run a timer for something in the kitchen, just ask it. Add something to the shopping list as well. Ask it the weather forecast. Sports scores. Recently it got the ability to play any Sirius radio station. Very useful little device - and I'm sure there is tons of stuff it can do that I don't even know about.
Doing any of that stuff with a PC, tablet, phone, or TV requires remotes, buttons, apps and on and on. With Echo, you just talk.