A lot of people (such as myself) have purchased Sony PS3's for playing BR movies first and foremost. I have purchased a few games, but as it stands right now, I can still sell my PS3 used for maybe $100-$150 less than I paid for it. I can also sell off a lot of the games for not much of a loss on online auction sites.
I have enjoyed the games, but I'm not hooked. I'm lucky to play games once per week.
Since HD-DVD has dropped prices on its standalone, I have decided that if BR counters, I will sell off my PS3 and purchase the lower-priced BR standalone (if prices drop by Christmas).
Why? Well, mainly because of noise. It's not nearly as noisy as the X-box, but it is noisy. The fans run all of the time (I keep mine vertical for better cooling). Also because the PS3, standing vertically, is somewhat of an eyesore (although not as ugly as an Xbox, for example).
Would you sell your PS3 for a standalone, if prices on standalones came down?