i think i will not agree on the concept that aircraft development reached its peak in 1955 when airplanes like the 152, the 172 and the PA28 were introduced.
i also tend to not agree on the assessment that a PS28 is not a good airplane because it wont last 12000 hours and 4 decades of service.
PS28's will probably last 4 or 5000 hours then will be replaced by more modern machines.
trust me i will never miss the crummy, stinky, tired spamcans that populate most GA clubs. there machines were obsolete 25 years ago and it is high time they will be recycled into coke cans.
reality is that in the GA community there is still a huge prejudice against ULM derived airplanes. but thats the future.
the youngest 152 around is almost 30 years old.... thats definitely the past.