Bitcoin will get regulated more in other countries and in the USA. Eventually exchanges who want to continue to exist will need to comply and comply with this and blah. Exchanges as they stand now are only useful in buying into BTC. But that is not to say another system could be developed that also does this.

We don't need exchanges technically speaking. The technology already exists for Bitcoin atms and people use localbitcoins, but if we want to have mass adoption we need something big and faster and easier.