100% of phone calls to my mobile device are robo calls. I get around 5 per day and (because of this) I never answer the phone. I actually tried to uninstall the dialer app but it seems to be fairly well-integrated into Android.
The humans in my life call via voip(ish) apps (Messenger and Facetime mostly).
Part of my monthly cell service cost is ostensibly for the line. Which I don't use and would prefer not to have all.