Customers love it for it's ease of use and businesses love it for the constant income.
I should be able to enter a bitcoin address into my bitcoin client and pay it the exact same amount of bitcoins whenever I so choose.
Imagine having all of your subscription payments easily accessible from a single program on your desktop?
Right now I have to make sure I top up my cell phone every month with my credit card through their website. I have an automatic payment setup to withdraw money from my bank account for a dedicated server I rent. I have care insurance payments that can only be dealt with via fax+phone being charged to by checking account. And I have some forum subscription payments that go through PayPal. It's a nightmare to change any of them. If I could just click "cancel subscription" or uncheck a box on my desktop to cancel a subscription I would be thrilled!!!
It's a good idea, but probably not a deal breaker right now. There are lower hanging fruit to go after. At least in my opinion.
Sure, not a deal breaker. But it's a pretty simple implementation (windows already has scheduled tasks, and linux cronjobs) for a major improvement in the client imho.