If Martians are real, they are probably very boring.
"So, what are you into?"
"Uh ... rocks."
Think of the most severe dullard you know, someone who the thought of seeing in a room sparks dread within you. That person is that way despite living on planet Earth, with education, TV, radio, records, the Internet, recreation and other humans. And dogs.
Imagine meeting someone who doesn't have that and shares no common language or possible appendages.
To say nothing of what Martians might think of us.
"So, are into anything other than pollution?"
"Uh ... rock?"