I hope it also doesn’t matter to any of your friends. I would be pretty annoyed if I had a conversation with you and it ended up as property of google.
if you're willing to assume that Google is willing to violate their presumably legally-enforceable policy that they will not view the items in the "personal profile", then one could assume that they would probably also be willing to read data from any Android device. so better tell all of your friends to never use Android or any other Google service.