Is art a big waste of time and should be outlawed?

I doubt it.
There has never been a human culture that did not create art.
Art does no harm to anyone.
Many people derive deep pleasure from it.
For some people it is therapeutic.

Try asking the same question about sport and see how people react. ;)

A world without art would be a boring world.

art is like a big thing. Imagine a world where everything would be basic ; it just give some spice to have arts everywhere

No way
Art lets us step outside the boundaries
of the mind.

Member of the Taliban, are we?

It would be a very shallow and empty world that has no art of any form.