First of all a very good question asked by you Isha. The problem with plastic is that it cannot be disposed easily and hence a lot of problems are found including environmental and health hazards. It usage should not only be minimized but also be banned. We should not use plastic for a healthy and environment friendly natural surrounding around us...!
but plastic is useful in some manners also like if we want to safe something from environmental causes then we need to cover it with plastic covers only.
Causing loss to plastic industries is not main problem.When we want to save our entire world means we must not care about the companies.If the earth is good means the industries will be or there wont be any creature on the earth.