Guys…typical Mello Roos (aka Bonds) are used by the developer to build all the infrastructure for a residential development. Aka the roads, utilities, curbs, gutters, lights, etc. etc. Stuff that the government USED to pay for but because of Prop. 13 (their excuse) they no longer can afford. Sure you can get rid of the Mello Roos but then the price of the home will go up.
Not defending developers but I am one (Commecial though) and you need to understand the full picture.