I had been using a sprung saddle with my grocery-getter bike, along with a quill extender to give a more upright ride. (When I first got back into riding, my belly required a very upright riding position.) I just got rid of both about a week ago. I'm not sure which factor contributed more, but I used to experience a lot of "pins and needles" feelings in the groin area, and used to have to make it a point to stand up out of the saddle every minute or two to let the circulation come back. Now less of my weight is on the saddle (and there's significantly less weight to be on anything), and what weight there is firmly supported by my sit-bones. No more tingling or pins and needles.
I'm not sure I'd go back to a sprung saddle again.