Choosing between www and non-www URLs
In our experience, Google and other search engines do not care if you use www or not. For the older generations, www symbolizes a website. For the new generations, this is no longer the case. They will type the domain name without the www and expect the browser to resolve correctly.
A URL with www is not the same as one without. In more common English, the two are different pages on a website. A properly configured web server sends the traffic to one or the other, with www or non-www. If such a configuration is not done, Google may penalize you for an incorrect setup.