I love that movie, and though I often forget about it, it has to be somewhere in my top 100 movies.
My hate of Leo stems from an older sister that tormented me with her love of Titanic, to where I hated every single bit and piece of that movie with intense burning passion. She literally saw it in theaters 30+ times, no exaggeration, and once it came out on video it was played at least once a week on the only cable equipped tv in the house. I'm sure you can understand that that is WWWAAAYYY too much Titanic for a 10 year old boy. And that godawful Celine Dion song she used to play on repeat all day (when she wasn't watching the movie)....
The thought of it makes me want to take a nailgun to my eardrums.
And because he was the root cause of her psychotic obsession, all that anger lay on his shoulders, though admittedly unfairly placed.