Earlier quoted context omitted.
You can't provide information that you don't have. Keeping no logs is the best default practice from a legal and privacy perspective.
Privacy yes, but legal? If you operate a website/ service that may be used for illegal purposes then I think you need to be able to track down illegal activities.
http://www.internetlawyer-blog.com/2013/09/isp-data-retentio...
https://www.ivpn.net/data-retention-laws/united-states
https://www.bestvpn.com/blog/5539/data-retention-and-vpn-log...