if it's your dd and do a lot of hwy miles it can be worth it.
for me i only drive my Z on the weekends in light traffic and to this day i only have 2 small chips (after 2yrs). so im not sweating a clearbra.
my G is 7yrs old and finally it's starting to show some age but from like 2ft away no one can see the very tiny blemishes. it depends on how you use the car.
no clearbra on her either.
on the other hand, my wife's dd had all sorts of chips.
she follows cars too close imho...