In a similar vein: pretending that state inspections went away, how many would bother having their vehicles "inspected" on a yearly basis? Or every 2 years, or whatever?
I'm really not worried about a 5 year old vehicle--too new for rust of any sort, and any "critical" system will give warnings long before going--but somewhere around there I'd start to wonder about ball joints etc. Most of which yes, I could check myself: but no, I couldn't replace myself.
I like the notion of getting unsafe vehicles off the road, but as pointed out, plenty of people skate by regardless. So, the question is, what would you do if the inspection requirement went away? Still visit the mechanic every so often for a generic safety check?