Leaving a complete historical record for your civilization hardly equates to writing "I was here". I'm sure Wikipedia's diligent workers will be happy to know that all their efforts equate to graffiti in your view.

As a Wikipedia administrator myself, I do believe it's important to take a distant perspective at times. The capacity to laugh at your own efforts and predicament certainly has value. At the time scales of the rise and fall of civilizations, one should not take oneself so seriously!