Why are being kind to others and doing good deeds so crucial?

That was more of a rhetorical question, so I'll wager you didn't actually ask it. However, in this day and age when we are urged to isolate ourselves from one another, disregard one another's needs, and put more emphasis on taking care of ourselves than ever, assisting others is extremely crucial. Up until that point, everything is fine.

Being cruel has nothing to do with staying safe.

And now, performing random acts of kindness has taken on equal importance as breathing.

Believe me, there are many times when you may help others without ever leaving the security of your own home because there are so many various ways to do so. Simply go looking for them.