they couldn't adapt to humans, they died, life goes on.
this emotional attachment to animal life is amusing to me. I call it the "fuzzy factor" you don't see too many people raising hell about reptiles, bugs and other such creepy crawlies, but give them a cute face and a sad backstory and they will spend billions of dollars ramming their boats into the "offenders" at high speed, while blubbering incessantly about how much they care!
I think those sorts of people are hilariously retarded!!!
Its actually about survival.
We don't live in some king of magnificent isolation; we live in a finely balanced ecosystem, and messing with the order of that ecosystem is a very risky business.
I'm glad you brought up bugs. Just imagine what would happen to the human race if we were to entirely wipe out all insect life on the planet. You would be quite happy I imagine. No more pesky insects to bite you, no flies to land on your dinner.
The reality would be utter disaster for the human race....
More than half the world's crops are pollinated by bees and other insects; no insects, no pollination, a 50% failure of crops worldwide, mass starvation of people measured in billions. Wars over food will wipe out even more. The world herbivore population suffers mass starvation and extinction, and that follows up the food chain to the carnivores who will run out of prey.
In the mean time, there are billions of dead animals all over the world, as well as dead humans. But there will be no flies other insects to dispose of the rotting flesh. While the lack of insects will remove the insect vector from the transmission of disease, the sheer weight of carcasses will ensure that airborne bacteria will transmit disease to many of the remaining living individuals.
That is how important insects are to us.
Everything in the food chain has is place. It took this planet 4.5 billion years to reach the balance it has today, and we are in danger of seriously disrupting that in just a few hundred thousand years of human existence.
It is now thought that the dramatic rise of the toxic algal blooms that infect shellfish farms along coastal waters is a direct consequence of the lowering of populations of some whales and dolphins; not enough of them around to keep in check the populations of fish and other water-borne life that feed on the algae. You just never know what the consequence of wiping out one species is going to have on the environment we live in.