Not everyone can file Chapter 7, and not everyone would want to.
There are times when someone will want the advantages of a Chapter 13 bankruptcy.
Plus, let's face it, if you can afford to repay your debts, Congress passed a law so that you have to. Not all of your debt, but at least some of it. Whatever you can afford. A fixed payment, for a fixed term. And then you're done. Period.
Did you know that there're are attorneys who don't go with you to court? Or once your repayment plan is "set" they bail, handing you off to another attorney, far away off the 405 freeway? We stay with you. At the 341a hearing. Through the term of the Chapter 13 plan. It's all part of customer service. Sure, bankruptcy attorneys aren't known for that, but why settle?