"Who takes pictures of lighthouses? It's so boring."

Claiming that a particular subject is boring is extremely uninspired. For example, landscape photography is "boring", but aren't Ansel Adams's photos creative and high art? Didn't Van Gogh take landscape painting, a very old subject, and elevate it?

I could just as well claim that taking photos of people is boring - It's been done a billion times before. Reducing a work of art to just the subject seems to miss the point of what art is.