Must there be a reason for everything?
Not necessary, it all depends on the things.
Well, you can give a reason to it or not give the reason at all.
It all comes from you to decide the reason or no reason to be given
But reasoning to pple who do not understand, it will defeat the purpose
of having the reasoning. Some pple want have some reasoning, or else
they will do the wrong thing and keep on misunderstand the morale.
Some will sure not understand and repeat the same old mistake and
thinking that it was right for them to do so.