Allan, I certainly do have an agenda! :hysterica I absolutely hate the current tax scheme and I believe this is the best possible answer.
I don't want to be an ass here, so please, take my comments for what they are worth. First off, I can't honestly understand how you can ask what's wrong with the current tax system with a straight face. And I know this next comment will get some rolled eyes, but READ THE DANG BOOK!
That being said, here's a couple of responses that are in no way inclusive:
1. The current system favors special interests and gives individuals as well as corporations ways to "game" the system.
2. Witholding. It's a scam.
3. Though I'm in no way a "soak the rich" kind of guy, I think we all know they pay less than their fair share in many cases under the current system. No way around it with the Fairtax.
There's plenty more, but seriously, you need to read the book.
As to Social Security, can we leave that for another thread? This is not a cure for social security. The authors even started to say that in the book before caving and saying it would be (my one complaint about the entire book, so I'm willing to overlook it). This is a different way to fund the government, pure and simple. It's not a cure for SS, Medicare or Medicaid. It isn't a cure for Government over-spending or for broken down entitlement programs. It's simply a better way to fund the government. I'm more than happy to discuss the other issues on other threads, but let's keep this one on the FairTax, please?