You'll shoot your eye out.
My parents got my sisters and I each Google Homes. I've never been too intrigued by these or the Echo. Without a smart home, what value do they add?
Depends on what you find valuable really. You have the power of Google search without touching a thing. Just like Google, you don't have to be overly specific to get an answer you want. For instance, you can ask the status of a specific flight just by giving the source and destination cities and the airline name. If you're a Google Play Music subscriber you ask to play just about any song, and/or radio station. If you have a Chromecast you can link app accounts and have it play on your TV.
The smart home features are very nice, but require spending additional money. However, if you decide to make the investment in say the Phillips Hue system, it's extremely easy to setup. Which means you can walk in your house and say "Ok Google, turn on kitchen lights" and done. To get all that functionality in a very well designed, and good looking, all in one speaker device for $129 is pretty damn cool.
Additionally, you can have it control smart plug and smart switch devices so that opens up a ton of opportunities.