I don't know, I'm torn on this. I don't mind using emulators, and in many ways they have their advantages (higher resolution, save states, etc). But I can't say I've ever "preferred" to play any game that way.
Light games with a mouse are boring. As are single stick arcade shooters. The Lost World and Star Wars Arcade for instance are both horrible in emulation, as the challenge is all but gone.
I think the best time for emulation is with a portable. Having multiple systems in your hands on the go has to be the best thing about emulation I can think of. And in that situation, I can think of countless games I prefer in that regards.
However, while I've tried over and over to "switch", I just can't. I have usb controllers that look and feel like those from the real systems. I just can't get over the feel of sitting at a PC versus on a couch. Playing through loading a rom vs pushing in a cart. Games seem to lose their value when I just have a mega list of them to scroll through. Where as if I buy a used cart or disc, I feel proud to own it and display it on my entertainment cabinet.
Still, like I said, playing these on a JXD s7800b while on the cough while the wife watches cable on the TV I use for games is a life saver. Heck, if the virtual console was better on the Wii U, I'd be happy with the gamepad doing the same thing. That's honestly the only reason why I've turned to emulation and the JXD. Nintendo's laziness.