I didn't need certainty to get me to buy a PS3
Regardless of the format war, Blu-ray will remain as long as the PS3 does. I haven't been buying a ton of movies, but I haven't really bought more than 1 or 2 DVDs since December either, and I used to buy 1-2 movies a
week. I bought the PS3 for gaming also though, so it was a no-brainer for me.