I think Chicago has pretty nasty muggy summers, but I can't compare to DC, so perhaps they really are worse. I guess what I'm struggling with is that I lived in NYC before Chicago, and there, it was incredibly diverse and you had people of all ages out and about and single. 30 was considered young there, and I had single friends of all ages. Then, at age 30 I moved back to Chicago, and it seemed like everyone I grew up with got married in their mid to late 20s. When I go out, the vast majority of people I meet are ages 23-28. I don't *look* like I'm in my 30s, but I guess it makes me feel a little old and jaded that everyone else is so much younger.
The two times I've been in DC this year, it reminded me of NYC, in that there are tons of people of all ages single and going out, and it gives you a little of that peter pan feeling. If you don't want to "grow up" yet and settle down, there are more than enough compatriots to join you. Eh. Perhaps I should have posted this in the non-trad forum. But being in DC made me feel young again.
And for what it's worth, I find these days that I'm comparing DC to Oak Park (Loyola) in my own mind, not exactly Chicago proper.