Reusable does not mean cheap . Usually you want reusable to make it cheaper but not always. For example your standard AA/AAA batteries are much cheaper if they

Reusable does not mean cheap . Usually you want reusable to make it cheaper but not always. For example your standard AA/AAA batteries are much cheaper if they are one time use than reusable [1] Reuse may be desirable in a product for environmental impact, turn around time, security or many other concerns. Shuttle was mostly reusable even the booster components , not cheaply but reusable nonetheless. [1] it is a crude example, overall cost being more expensive, TCO per cycle will be cheaper for rechargable batteries