Answer:
We need to stay safe because of everything that is going on in the world right now. The pandemic is very dangerous and can kill people, which means we'll never be able to see them and second, there are lots of bad people in the world. For example, mafias, robbers, etc. Some people bring weapons for their own safety, but others, unfortunately get taken away from their family or worse killed in front of them.
Hope this helps
Sky