I had the chance to meet him when he stopped in to see Plan 9 play in Ann Arbor in 1983. A very sincere, friendly guy - always sad to see someone like him pass on so early in life.
though they had their roots in the garage/teenbeat era for sure, the MC5 guys were definitely more part of Detroit's 'counter culture' which was a scene more similar to the SF hippy thing and the 70's NY punk era. Within that context, I'm sure 24 was considered ayoung/normal age as these kinda scenes had their fair share of older hipsters (i.e. in SF: Ginsberg, Burroughs, Leary, etc. in NYC: Alan Vega, Andy Warhol, i think maybe all the NY Dolls were well into there 20's, not to mention the Sunset Strip scene which had plenty of full grown men rockin the teenbeat: Sky Saxon, Vito of Vito's club, Kim Fowley, etc.)
thats real sad about Mr. Davis....alotta these guys struggle with demons in their later years, but if that bio linked here is even half right Davis seems to have led a full happy life well after his rock heyday.
For further proof of the coolness that is Michael Davis, check out the MC5 documentary "A True Testimonial," copies of which should not be too tough to track down.
Heaven just welcomed one very cool motherfucker. R. I. P. Michael!