Last year, for a semester, I worked the 7:30 PM - 7:30 AM shift every other Saturday night. The company I work for is about an hour and a half away from where I went to college. I'd stay up and do the "college thing" every Friday, wake up at 3 PM, then go to work.
I loved working nights. We'd have two minute response times, and working BLS we'd be allowed in the ALS cities to work as first response / backup units. I loved having no traffic, I loved seeing the same faces everywhere I went. Nothing was open late, but I didn't mind. When my shift was over at 7:30 AM, I'd drive home, sleep until 8 PM, stay up all night, and sleep through my Monday classes. It was great, Linguistics was horrible, and was a perfect class to sleep through.
When the semester was over I realized I couldn't perform working nights. It just threw my entire schedule off. Now I work days, and my career in EMS consists of 400 lb dialysis patients. I want nights back.
I'd love to see how people did it as a career. All of the people I worked nights with didn't have children, and their spouses (almost all were single), were always in EMS too. I miss nights, it was fun, but I don't think I could do it full-time.