Salam brother Naushad,
The real reason behind your not being able to understand about what salat could be is the preconceived ideas, the way you see it done and understood by majority(and everyone has the same excuse!). In the back of your mind you are trying to justify what majority and we have been taught and doing all our lives, otherwise the concept is pretty simple. As an example I would say you have automatically assumed it to be order of Allah to perform Salat(whatever you may think it is as) "DAILY" when it is not said that way anywhere. And brother Anwar your understanding is correct as nothing can happen unless people join forces and wadu is simply the basic hygiene practice(another social responsibility) whenever you're coming for salat and meeting general public.