Why no cover?

I was buying milk this morning, and I told the shopkeeper "Cover nahi chahiye". He looks at me like I'm from outer space.. then he cleans up the milk covers, gives me the change and says "Thaili kyon nahin?".

I started saying "Kyunki.. " and I wanted to say "plastic bio degradable nahin hai". But then I realised that it wouldn't make much sense to him.. and it would take for ever to explain what 'bio degradable' meant.

Destiny

If its written, it will happen, even if I don't try.
If not, it won't, no matter how hard i try.