I'm so sorry, I'm not trying to be rude, but this struck me as so funny. We have always viewed it as just the opposite- nothing else in Orlando to do besides WDW.
There is SOOOO much to do in SoCal!! The weather and beaches are wonderful. LA has so many great attractions. San Diego is my DH's favorite city (San Francisco will always hold first in my heart, followed by NYC, but San Diego is special and unique and so lovely) and we have spent an entire week there before, in addition to many shorter trips, and we still haven't seen everything. Balboa Park alone, with all its amazing museums, could take up days! Nothing to do in SoCal?!?!? So not true!
In return, please feel free to tell us what we might be missing in Orlando! We are always there as the second half of our yearly visit to my in laws in Cape Canaveral, so we get 3-4 days at WDW and that's it, but one of these days, we will take a longer trip there, and I'd be interested in hearing the other things Orlando has to offer (besides the other amusement parks).