I use Hangouts at work because it's easy to get it on the screens in our office. I don't use VoIP in my personal life much, and never on a computer, I'd rather use a phone (and therefore either a phone call, or Signal).
So then maybe this isn't for you, but for me it completely replaces WhatsApp and Signal on my phone and now I don't need Skype on any of my computers (Linux for work, OSX on the go, and Windows at home) and all my conversations sync between my phone and computers.