Yeah, really! Poor Boromir is caught up in something he doesn't understand and is just struggling trying to do the right thing for Gondor. Plus he has this ring thing attacking him and he doesn't even realized he's fighting that battle until after the bully scene. At least he doesn't turn traitor like Saruman or give up altogether like Denethor.
Boromir-bashers probably like shoving people off of cliffs!
That is my take as well, he is not a big thinker, but a warrior. He is taken by the ring because he can sense its power, not because he wants to be evil, but because he doesn't reconize that it is evil abd unable to be used for good.
The ring corrupts people using their own ambitions for power or glory, and because of that, Boromir is the most vulnerable and the first to fall. He wants victory for Gondor, and sees the ring as a valuable tool. Although Aragorn wants the same for Gondor, he did not fail the test, because he understood better the essense of that lust. Aragorn "got it".
Perhaps there is a part of Boromir who knows that the return of Aragorn will be the end of the steward's reign. Perhaps he can see that he is not the man Aragorn is, and that his family will be removed from their rule of Gondor. Perhaps he resents that the stewards, even after all these years, are not considered king. Perhaps he thinks he should have been king.