Explanation Needed (spoilers)

Rating: 1/10 (1 February 2005)

As a 20-something year old, I thoroughly did not get this. I didn't get the first scene where it looked like the plane was going to crash and I didn't get the rest except for the call from his dad saying the mom had died, the fireplace scene where he explains that he pushed his mom, and the bedroom scene where he officially blows off any responsibility for the act.
Other than those 3 scenes, the rest of the movie was pointless. The whole trip down to the boathouse? Neither a subtle nor very good metaphor. The whole movie was this dull patchwork of random scenes that didn't do a thing to move along the plot. I felt like I was watching a Seinfeld movie in that it was about nothing.
And the fact that the main character can't even take responsibility for his acts just turns me off further to the movie.
Can someone please give me a real explanation that doesn't involve a general "it speaks to a generation" fluff?