[QUOTE=john doe;522051]Sparkplugs, batteries, headlights. These are all thing that will only be replaced ever 4-5 years. They should also be planned to be replaced before they fail per the owners manual. Why would anything that needs to be replaced that seldom ever be a consideration for fast replacement design effort. QUOTE]
Simple basic logic would be my response, problem is we live in a throw away society that has very little pride in its craftsmanship. Having grown up with parents and grandparents who lived through the depression you learn to fix things and take pride in what you have and make.
Our landfills are full of crap that could of been engineered to be repaired and have a life span three or four times of what we currently get. It really comes down to corporate profits and greed.