I'm glad it works for you. I hate it so much I'm telling everyone not to contact me there. It's integrated too deeply with Facebook. I actually succeeded to get people I talk to the most contact me on Signal instead, and they quite like it. (Signal now supports calls from the desktop client)
I wouldn't say it particularly works for me in any specific way. It's just that everybody that was on skype years ago is now on messenger plus some new people. Deep facebook integration is cause of this so I can't be mad at it.
I'd say Telegram is probably the "nicest" app I've used for messaging. WhatsApp and Messenger are Ok. Signal, whilst being idealistically the best, is spartan, kinda ugly, and lacks many features that make messaging "fun".
Telegram has been picking up steam in my wide network. It's been surprising to me how easy it was, as an early adopter, to convince people to use it. It doesn't work with everyone; WhatsApp dominates around here. But in the tens of people that I care to communicate with have happily switched to Telegram for much of their chatting.