I totally agree with that. I've good experiences recommending Quicksy[1][2] though. It makes not only account creation easy as pie, but also helps people finding their peers by their phone numbers.
Give it to your average Joes and Janes and they will just use it like any other messenger. But since it is pure XMPP, can just use any other Jabber account to chat with them. :)
I recommended it a lot the last weeks and most of my pals just use it without any hassle. At least in my bubble most of the people have besides WhatsApp also Telegram or Viber or WhatEver installed. So it's for them Quicksy is just yet another app. But this time one, which helps to get out of the walled garden. :)
[1] https://play.google.com/store/apps/details?id=im.quicksy.cli...
[2] https://quicksy.im