I've been to Chicago... oh, wait... I'm IN the Chicago area.. and have lived here for more than 40 years.
The business climate in the greater Chicago area is second to none. We have culture, museums, theatre, restaurants, transportation, and multiple sports teams and arenas. We have a world-class international airport, and Lake Michigan for sport, relaxation and fun. We've got the cubs, sox, bears, blackhawks, wolves... and more.
We have a prime location, central to many things, nationally high ranking schools, and universities and much, much more than I can mention here.
Weather? well, there's an old Chicago saying. If you don't like the weather, here in Chicago... wait a few minutes, it'll change. If we had the weather of, let's say, a "San Diego".... nobody would ever leave Chicago... so it would be unfair to the rest of the country. But we have everything else.
Does it get humid here in the summer? Are the winters unbearably cold and long? Yes. Would I live anywhere else? Well, maybe... San Diego sounds nice, and Paris is nice in the spring... but Chicago is a great town.