Does a pin's constant usage as 5V supply wear it out over time? If a pin is used to supply power to a sensor and it work fine now, will over time the pin become weaker? I have a sensor what is used sometime and shut off some times, so is controlled by a pin.
The connectors are rated for a certain number of insert/remove operations, after which the springiness of the springy parts may have deteriorated, and they might not make good contact.
There is no reason to expect pins to wear out “electrically”, as long as they are used within specs.