I just upgraded my Crt for that reason! I have a pelican switch connected to my NES,SNES, Genesis/CD, Gamecube, PS1, and Dream cast, with a TG-16 and an Atari 2600 hanging off the Coax.
I'm in the middle of my regular playthrough of Link to the Past right now. Sure, you can play it on the new systems, but it just doesn't feel the same.