I was wondering aloud at work the other day if robocalls could actually spell the end of the phone number. It is extremely rare that I actually make a telephone call to talk to someone, it's been replaced with facetime and google hangouts, and it's very rare that someone calls me on my phone number that isn't a scam call. Pretty much the only time I get calls that I need to pick up are when my kid's day care is calli…
I think phones are stilled needed. They're still the most reliable form of communication. But I see most people switching to white lists. Anyone not in your address book will get sent to voicemail right away.
Imagine the future of mobile adware...where they get access to your contact list, generate generic names of similar ethnicity to your real contacts, and add fake contacts. Or they add additional numbers to contacts you already have.
"Oh, my friend Stan is calling. DANGIT NO I DON'T WANT A MEDICARE SUPPLEMENT PLAN!"