If the strut breaks on your strut braced Cessna, well, it's not going to end well. That said, it is widely accepted that there has never been the failure of a strut braced Cessna in flight. I am aware of a 185 which was so badly overstressed recovering from a spin through cloud, that the wings were bent outboard of the strut. It still landed safely, and the wings were rebuilt.
This is from a lengthy discussion in a previous Pprune US thread, I can find no documented evidence of a wing failure in a 172/152 other than from coming into contact with another aircraft mid air, however to get back to my original point of U bolts on the spring undercarriage of a C172, Cessna deciding something should be changed 'just because we said so' will inevitably end up in court, meanwhile I personally would not buy another Cessna product full stop .... Under 15 years old or not.
Incidentally I am currently in the process of organising the SIDS program for my machine, and will keep in touch with any problems found in the process.