I can understand when the "imports" are going to a place such as Australia, where the majority of indigenous species are found nowhere else on the planet. Australia is some sort of "alien life force" planet, containing thousands of species of animals from mammal to reptile that you will not find in the wild anywhere else in the world. Couple that with the ever-growing problem of feral animals(rats, goats, pigs, camels, dogs, and un-counted numbers of reptiles and amphibians) that have already been distributed throughout the country, and the amount of damage those introduced species have already caused to native habitats, and you have a country that is struggling to maintain an incredible amount of diverse habitat and wildlife...none of which can be found anywhere else in the world.
You can't really blame them for wanting to protect their native species. Blame the people that attempted to illegally smuggle the animals into the country, not the people doing their best to protect an already extremely fragile(and widely polluted) wildlife ecosystem...
Yea...it sucks that the snakes were put down. But in reality, I think the people that shipped the packages should be tried and punished right alongside the people the package was being sent to...