You can bridge your Discord channel(s) to Matrix rooms, so it's basically win-win unless you rely on some proprietary custom verification system (e.g. Reactiflux's complex system), although with a little work you can re-create said verification on the Matrix side.
EDIT: I apologise if the tone of my original comment came off as snarky, by the way. It's just so annoying and tiring seeing open-source projects require people be on some downright unethical[1] proprietary chat platform.
[0]: https://matrix.org [1]: https://gist.github.com/Rapptz/4a2f62751b9600a31a0d3c7810028...
You can usually get some use out of Discord by just clicking an invitation link, but for Matrix it looks like I have to create an account with some shady unknown social networking entity