If you’re not on WhatsApp, no updates or news from your kids school, your sports team, your family, your car dealership etc. for you.
But since January the trust in Meta has not only plummeted but it's become a mainstream enough talking point that I now receive invites to join Signal groups from--for want of a better term--normal people. Two of the local parenting groups I'm on are on Signal and no one ever mentions it or questions it, it's just "here's the group link" and the expectation that everyone has it installed.
I switched phones and lost all my history. Now I’m fairly careful with these things, and make backups, but even I wasn’t able to get it back. Couldn’t recommend it to anyone since.
There’s a line between being secure and being useful, and they’re slightly unbalanced in Signal.
I've had a 90-day message retention policy set in WhatsApp ever since the feature became available. Not because I doubt my ability to manage secure backups, but because I don't expect my contacts to act equally careful.
I wish Signal supported a 90-day retention period. Four weeks (Signal max) is often too short for my contacts, which leads people to disable it altogether.
I also find it frustrating that Signal only applies your message retention policy to the conversation when you initiate the conversation, not when others do. As a result, more of my conversations end up being ephemeral on WhatsApp than on Signal, which feels a bit ironic.