the gurus have to work there

may be 46.

They pray in temples and Gurdwaras.

Yes but there are very few of them there.

Yes, they do. No matter how lavishly decorated, or how many people come to worship inside it, all Gurdwaras serve the same purpose. They are all places for Sikhs to go to worship and show respect to the Guru Granth Sahib. How much money you spend on building one, or how many people travel across the world to visit one does not make a difference, Gurdwaras are there to be worshipped in, they are NOT just for decoration.