If this has been asked previously, my apologies...I did a search and didn't find what I was looking for.

I continue to look at the 4/3 format units, but can't quite figure out (or justify to myself) why I would add it to my photo inventory.

when travelling on trips, i take my nikon d200 along with a 24mm prime and either a 24-85mm or 18-200mm zoom. I also take my canon s95 with me constantly...which I love, has lots of helpful/manual features and I believe does a great job for a p&s.

so, help me understand why I would opt to add any of the 4/3 formats...as interesting as they look?

Thank you.