DPRK test-fires new ICBM Hwasongpho-19

They don't test their weapons on people, like the US does:

• Between 1946 and 1958, the US tested 23 nuclear devices at Bikini Atoll, using the native islanders and their land as guinea pigs for the effects of nuclear fallout. Significant fallout caused widespread radiological contamination in the area, and killed many islanders. A survivor stated, "What the Americans did was no accident. They came here and destroyed our land. They came to test the effects of a nuclear bomb on us. It was no accident." Many of the islanders exposed were brought to the US Argonne National laboratory, to study the effects. Afterwards the islands proved unsuitable to sustaining life, resulting in starvation and requiring the residents to receive ongoing aid. Virtually all of the inhabitants showed acute symptoms of radiation syndrome, many developing thyroid cancers, Leukimia, miscarriages, stillborn and "jellyfish babies" (highly deformed) along with symptoms like hair falling out, and diahrrea. A handful were brought to the US for medical research and later returned, while others were evacuated to neighboring Islands. The US under LBJ prematurely returned the majority returned 3 years later, to further test how human beings absorb radiation from their food and environment. The islanders pleaded with the US to move them away from the islands, as it became clear that their children were developing deformities and radiation sickness. Radion levels were still unacceptable. The United States later paid the islanders and their descendants 25 million in compensation for damage caused by the nuclear testing program. A 2016 investigation found radiation levels on Bikini Atoll as high as 639 mrem yr−1, well above the established safety standard threshold for habitation of 100 mrem yr−1. Similar tests occurred elsewhere in the Marshall Islands during this time period. Due to the destruction of natural wealth, Kwajalein Atoll's military installation and dislocation, the majority of natives currently live in extreme poverty, making less than 1$ a day. Those that have jobs, mostly work at the US military installation and resorts. Much of this is detailed in the documentary, The Coming War on China (2016). 1,2

don't let the door hit you on the way out

? Is there some source that says otherwise or something?

That is pretty standard for missile testing?

Next time they test weapons they'll drop them on kids heads like western countries do

Everyone except the European power structure IS imagining it. Literally it's the stated reason for Korea developing nukes - so that it can pursue everything else without the West choosing to bomb it back to the stone age for second time.

unfortunaty large parts of our "exploring the wonders of the universe" has been developed from "firing explody rockets at eachother."

ICBM tests do fly in a very high arc though, the point is to test the range while making it clear that no one should be worried about it striking them.