The Jurassic Park series of movies

Wouldn't you think by now that they would have learned not to mix dinosaurs with people?
What is it with having the two intermix by either having ppl. going to the islands or bringing dinos into populations where havoc happens with either one?

Just to watch Red Shirt expendables get attacked and/or eaten by them and throw in an exciting chase scene with a vehicle?

If this was RL it would be over by now. (Which the movies should be since it jumped the T.Rex a long time ago!)

Either they would have been left alone on a guarded/monitored island or else a military would have come in and wiped them all out with bombs and missiles.
Where are those guys when they are needed?