The comments about attentionspans, video games and frame rates are pretty much universally missing the point. At Thanksgiving I was talking to my 18 year old brother about video games, movies, etc. He had never been educated on the frame rates involved with various formats but he made a comment about how much he disliked watching movies on his friend's TV - using several disparaging analogies, etc. When he described the phenomenon, I was able to piece together that his friend's TV had motion-smoothing and explained how that worked. It was like a lightbulb went off for him and he could understand what was going on. He was glad to know such settings could be disabled. Someone that spends more of their time playing high frame-rate video games is not inherently going to like higher frame-rate movie formats. He likes them in his games in part because they reduce the input and response latency (something I've discussed in several previous posts as being unique to interactive media and a non-issue in cinema).
As far as attention-span, I can tell you that before he ever turned 7 years old, I used to watch artistic computer animation compilations with him (the kind that had essentially no dialogue to the tune of two sentences in 45 minutes) and he would watch intently, ask one contextual question during the viewing and be fully engaged the rest of the time.
Some people in each generation will have taste and some will not. The same goes for people that enjoy a given form of entertainment.
As far as computer animation in movies, let's not forget just how far the boundaries were pushed by Final Fantasy: The Spirits Within in regards to realistic human figures as compared to all the other CG movies around that time. It took a while for everyone else to catch up and if you look at what some of those animators have been doing recently compared to "The Hulk" examples, it's a pretty stark contrast. Just because CG makes extensive use of technology does not mean that the artists stop being one of the biggest differentiating factors. :)