At my TV right now is: Wii, PS3, PS2, Saturn, and Xbox. With 5 systems I cover 15+: NES, SNES, N64, GEN, SMS, PCE, GB, GBA, GC, PS1 (+ Wii, PS3, PS2, Saturn, and Xbox) and more via emus if I choose. I will connect my N64 soon as VC & emus don't cut it for that system for me.
With 5 systems and the proper authentic console controllers + adapters, I am quite comfortable with the quality of emulation these days.
Of course, time and time again I do bring out the original systems because nothing beats the real feel and nostalgia.
Otherwise, emulation lets me play more and have less to worry about.