On the third hand, it's really freakin' annoying that I don't use any of the apps you've listed, and yet I've got three messenger apps open at all times (BBM, Hangouts, Slack), with Signal on there as well (although texts are rare for me).
At least I can run Hangouts and Slack on my laptop too, but man, I miss the days of being able to communicate with "everyone" using one app, even if it needed several connections.
Laptop's got Adium running for IRC and XMPP as well. At least those are the open standards, but it's still at least three messenger apps going.
Get off my lawn, etc. but I remember how irritating this was the first time around with MSN, GTalk, AIM, and all the others.