Definitely. It's not the screen that needs protecting these days it's the rest of the casing I'm usually worried about!
Personally I prefer to play on original hardware rather than emulation (it's a bit like the old CD vs vinyl debate!) That's not to say emulation isn't great in a lot of circumstances, but I tend to prefer the real hardware. Timing is one thing I often notice is inaccurate or erratic in emulated games, my favourite example being Samus' wall kick in Super Metroid, which I often use as a quick acid test of a SNES emulator.
I've put together a collection of various JAMMA games that are favourites of mine and use a Supergun to play them. While it's a bit of a pain swapping delicate boards (the encased boards of the CPS1 Q-sound era onwards are a godsend), it's great to be able to play the original hardware. Obviously certain early non-JAMMA games need extra wiring to work, but it can be worth the effort if you're into this sort of hobby.
The person who makes no mistakes does not usually make anything.