I'm dailying a 1992 full-size van. The rear spring hanger broke. I ordered a replacement hanger and shackle, and kept driving. The leaf spring eye punched through my floorboard, and I kept driving. The leaf spring collapsed my fuel fill hose to the point of not being able to fuel it anymore, so I fixed the suspension.

I'm far less tolerant of problems with the front suspension. Almost anything worn or loose up there, and there is a real safety risk. But the safety effects of a broken rear spring hanger were low enough that I wasn't that concerned.