Originally Posted by Trakhak

Carbon fiber components such as the fork are not subject to fatigue failure (Fatigue strength of carbon fibre composites up to the gigacycle regime (gigacycle-composites) - ScienceDirect; "a fatigue limit [endurance limit] was not found"). The fork might break in a crash, just as a steel fork or an aluminum fork might, but otherwise, it should last as long as you want to use it.