Breastfeeding in Public

My state (or maybe city?) recently cemented the right of mothers to breastfeed in public.  Oh, goodie.  So now I can be assured of my right to do what I've been doing for nine years.

I bet that most people, over the last nine years, didn't even notice or realize that I was nursing.  Why?  I kept myself covered and didn't shout it out across the rooftops.  My baby needs to eat, so I feed it.  Why is there even controversy?

If it is a question of modesty, I still do not understand why.  Every woman on this planet has breasts.  Most even have two!  Can you believe that!?  What is the innate purpose of breasts?  Breastfeeding.  Why does it offend someone to have a mother breastfeed her child?  Every woman sitting everywhere has breasts which are covered up by her bra and her shirt.  So a woman decides to push aside the shirt, open the bra, and feed her child and suddenly it's indecent?  I guarantee that the baby's head covers up so much more than the bra and shirt did.  Most nursing moms even use a cover.  So now a nursing mom has a baby's head and a cover between her breast and the general public.  Threat eliminated.

So again I ask, Why is the controversy?