My modded 3DS is my constant companion. I've got a pc, the AYN Odin, a switch, but it'd the 3DS that I always come back to.
Truly one of the best libraries and one of the most charming devices out there.
Let's have a thread commemorating it! Share your memories, favorite games, anything.
The only reason would be playing games online, old firmware gets locked out a couple weeks after an update releases.
But there's also no real reason not to if you're already running CFW. As long as Luma is reasonably up-to-date, a system update can't break anything.