Is Unsubscribing from email newsletters a pain point?

Back story, I started working on EasyUnsubscriber.com a few weeks before unsubscribe.com announced their $2.1 million dollar round of funding. I've been talking to people running tests, but I never polled the HN community. So here it is:

Is subscribing from email newsletters really a pain point?

Does Unsubscribe.com address the pain?

Would it be more helpful to unsubscribe from everything in less than 5 minutes (which is what easyunsubscriber aims to do?)

Do you pay for the unsubscribe premium service? If not, why not?