As much as it pains me to say it, Jurassic Park has not really aged that well for me.
It mostly has to do with the whole man vs nature bit. I don't buy into the whole "We should never mess with nature!" or "Do we have the right to do this?" stuff that gets brought up time and time again. Everyone treats nature in this film like it's some godly self-aware entity that purposefully selects species to become extinct, and we should not interfere with it's process at all. Really? And as for messing with nature, we mess with nature ALL THE TIME! When someone gets a disease that is fatal unless cured, we don't do nothing and say "Nature is selecting that person to die", we grab a syringe and shout "Get me 10 ccs of cure, STAT!".
And zoos. We already have zoos. MANY ZOOS! Some even with endangered animals in them. And like many zoos, things tend to go wrong. But just because some greedy idiot decides to sabotage the entire park and set all the Dinosaur's loose, the conclusion our characters come to is "We have no right to make a zoo that has dinosaurs in it!". It's like the problem is hunger, and the solution is to drink water.
Now in 3D!