it comes down to what is available if there are no bearings available yes you would clean inspect and reuse. if you are on an island or in the middle of the dessert and there are no parts available..etc. people go woth a standard routine of replacing cam lifeters tyiming chain there is a check /inspection for all those parts where you find out if it is reuseble or not. Most dont know how to checka nd measue and inspect and they have more money than time so they replace verything, that is a lixury that may go away sooner that we thionk. goo dparts are becoming difficult to come by. After 3 or 4 chinese timing chains you may wish you hadnt throw your original one away...