Your way is the way that I choose for my own vehicles and the way that most of my customers would prefer. There are many who, for whatever reason, could never afford to do this type of maintenance.... They may be low income folks, they may not realize that it is wise to tuck a few bucks away each payday because something on a car WILL break or wear out, still others will continue to drive a hurtin' car thinking that the problem will go away if they ignore it long enough.
To avoid being branded a thief and brigand, I am always careful to include the lower cost estimate with the "good" repair and explain my thinking carefully.
Down time, inconvenience, being stranded, up front costs... these can all weigh heavily in a customers buying decision. Cars are broken down into two distinct groups.... sacrificial parts are those that wear during normal operation.... These parts have a finite service life.... most will exceed that but it is the difference between replacing a part nearing the end of it's service life or waiting until it is broken to replace it. The other classification of parts is "crash" parts... loosely defined as parts that need an "outside" impetous to require replacement... collision, rust, abuse....
Let's look at it this way.... I spend however much of someones money taking something apart.... there is one broken part and several parts that are worn but not to the point of failure.... It makes good economic sense to avoid a repeat disassmbly process by replacing parts that will reach the point of failure in the forseeable future
Don't worry, scott, I didn't set out to lecture but I felt this was a good opportunity to restate the obvious...