I've been moving friends and family over to it the past two years, since there isn't many viable options. Telegram is the only other one that I'd consider, but it's closed-source, so I'll go to Signal for now, until there is a more compelling reason to switch.
You forgot one of the most important aspects of Signal: it's an open-source app. https://support.signal.org/hc/en-us/articles/360007320391-Is-it-private-Can-I-trust-it-
I've been moving friends and family over to it the past two years, since there isn't many viable options. Telegram is the only other one that I'd consider, but it's closed-source, so I'll go to Signal for now, until there is a more compelling reason to switch.