I used to use Signal as an SMS client because almost nobody I chatted with (and nobody that mattered) used it. My wife and I now use SMS because we can’t agree on a separate app, and that sucks because that’s the main thing I’d like to be encrypted. My wife wants me on Discord, and I’d like her to go to Matrix, so we settle on SMS.
What I’d really like is to be able to receive SMS messages on my desktop in the same app that I use for secure communication. So if I use Signal as an SMS client on my phone, all of those messages would be sent to my other clients encrypted, and all responses would go through my phone. I think that would add a ton of value and basically get you to an iMessage-like experience. I was hoping Matrix would do something similar, but it seems that’s not the case (maybe I’ll try building it, idk).