Why didn't people try to do anything to stop the dinosaurs from becoming extinct?

Well the asteroid was so big and the Dinosaurs couldn't speak English. So they didn't listen when we told them to come inside our houses

uh..because at that time the few humans interacting with dino's had a special name.

Food.

What technology do YOU think there was then?

Fire?

wow.  what a tremendous misunderstanding of history.  dinosaurs were gone long long long before man, or even apes, or even mammals! arrived on the scene

Hmmmm...maybe because the "people" during that time were more or less pimates.  Unless you are basing your question on The Flintstones there was no need or want to have such large scale predators around.  Besides the surviving decendants of the dinosaur are alive and well...go listen to the birds or find a lizard or dragonfly.

During that time dinosaurs were not easy to manage.

Dinosaurs became extinct around 65 million years ago, the earliest hominin were around 7.5 million years ago, younger still is our lineage  Homo sapiens, less than 1 million years ago. Other than catastrophic global disasters, our species is responsible for the greatest number of extinctions due to our desire to re-shape our environment. One might argue that this too is natural selection, simply a result of our natural behaviour. However it's only within the last century we've learnt of the consequences. For example, no bees, no pollinated plants, so no crops. We could do everything artificially of course, but who wants to live in a world void of nature?

I hope this is not a serious question..otherwise I think the human race is doomed.  Humans NEVER co-exisited with dinosaurs...they were gone LONG before humonoids were around.

I don't think they cared back then....