It probably depends on the way your city hospital system is set up, but the institution where I am doing my preceptorship is the busiest Level 1 trauma center in the time zone. We still probably have a 4:1 ratio of medical:trauma patients, even on Saturday nights (it does shift towards trauma in the summertime).
Not because we have less trauma than other mid-sized cities, but largely because there are more medical problems than traumatic injuries. This is true nationwide - even (maybe especially) in the worst cities/neighborhoods in the US. For every homie who solves their problems with a Hi Point there are 10 others who have chronic conditions that are being under treated or not treated at all. These people dip in and out of the ED multiple times over the course of their lives because it's the only place they can get access or think to get access to healthcare.
I suspect some of your perspective might be from the patients you bring in/reasons you visit the ED, but it also might be true that your local trauma center is dedicated for trauma specifically. There are a few places out there like that (i.e. Shock Trauma in Baltimore), and in bigger cities there are usually so many EDs that some end up more or less functioning that way (King's County & Bellevue in NYC). Would be curious to know more if you want to PM me.
deep suctioning is pretty uncomfortable for everyone... especially the patient.
Glad they got the chance to see that. I think everyone should spend at least an afternoon in an ICU, too - if only to convince them to 1) not drive like idiots and 2) fill out an advanced directive, goddammit.