As far as I know, Bitcoin is supposed to be about ease of use, p2p money, fast, uncompromised, decentralized. What's the point of "payment processors" or whatever those services are called, when to use Bitcoin, all you need is to download a wallet, create any addresses you like, and start receiving payment for your work/pay others for their work? (or donating, or whatever you want to do with your money) without needing to give any personal details, and without the permission of anyone.
What the hell is really "Bitpay" and why is that a market?
Those payment processors are basically there to make selling bitcoin (or buying), into your currency, easier for small/large businesses.
It allows businesses the ability to convert their btc faster than waiting for someone to come to their store and say,
"I see you sell rare books, do you also happen to have some btc for sale?". Most businesses still need to pay bills or employees in regulated currencies.
Bitpay for example, is about converting your "pay check" into bitcoin, I think with direct deposit into bitpay banks accts.