We've already seen how this plays out in court with Sony vs BLEEM. I really hope Nintendo gets the books thrown at them, cuz I am getting really sick and tired of their "All illegal emulators stifles innovation" attitude. Especially with the fact that their fragile games are starting to break down and needs to be backed up for users to continue using their games.
They are pricey but cart readers like the GBxCart, Open Source Cartridge Reader, or simply modifying or running an R4 your Nintendo DS/DSi/3DS can help you backup your physical games. Which might I add is legal under archival laws in the USA (117) and backup laws in Canada (29.24).
Games tend to run better on Yuzu as well, they can definitely go to high res or frame rates if you have a decent computer. Some games may not run great right away, but give it a few weeks after release for updates and it absolutely provides a better experience than Nintendo's system.