There's no possibility that aliens capable of FTL would find us remotely interesting.
*No* possibility? And you know this how? Through an exhaustive analysis of all the sentient ET species in the galaxy?
Now your arguments are reasonable and I agree that it's quite possible things will be like that. But then maybe not, we just don't know.
I can easily imagine an alien race that is genetically driven to multiply and expand above anything else. Other races to them are just obstacles to be eliminated, kind of like how humans expand into new areas (e.g. Amazon rainforest) and destroy existing lifeforms that get in the way of what they wanna do (e.g. burning down the rainforest so they can use the land to plant crops). Even with FTL travel and advanced energy sources (fusion or anti-matter or w/e), exponential population growth would mean they are constantly looking for new planets to take over.