There are around 18MM new bikes sold a year in the US [1]. About 100MM people bike each year in the US [2].
Do bikes really wear out every 5 years? Mine is 22 years old and still in great condition.
We should have piles of the things at every street corner. There must be landfills full of bikes.
[1] https://nbda.com/articles/industry-overview-2012-pg34.htm [2] https://usa.streetsblog.org/2015/03/04/survey-100-million-am...