> not sequence all people's DNA

While the people in power yesterday/today might not abuse databases of their entire population's DNA, those of today/tomorrow might. In the long-run, of 10y,20y, 50+y, you cannot guarantee this information will not be used for extreme harm. This is different that vaccines. Not everyone can be vaccinated, so to ensure that everyone is protected, everyone must be vaccinated. DNA sequencing at most only helps the person and at most their offspring. It should be a choice, and not mandatory.

> my country

out of curiosity, what country?