dyslexia wrote:well ok but my money put into savings (investments) generates unearned income and that's what I live on today.
Sure, but that unearned income would be taxed as soon as you used it for consumption under a consumption tax system. I'm also not sure what you're saying. Under the present system, investment is taxed as capital gains when you realize those gains (maybe not a great system, but investment is still taxed).
Regarding the consumption tax, aside from some of the distributive problems that have already been discussed, and which might be reduced by a rebate (as posted by Thomas), there are also some problems with market distortions under a consumption tax, even if services are included. Specifically, not everything has the same elasticity of demand, and a flat sales tax would affect the consumption of some things much more than others.
<this isn't my original observation, but I have no clue where I got it, so take my sourceless ramblings with a grain of salt>. Ideally, I think we would want to maintain the consumption habits of consumers as if there were no taxes. Thus, the very sensible intuition that we shouldn't tax food and medicine under a consumption tax, as proposed by Gunga earlier, might be backwards. Things like food and medicine, for which the demand is typically inelastic, should be taxed at a HIGHER rate if we want the consumption tax to equally effect every purchase decision. Raising the tax rate for these inelastic goods and services is totally politically unviable, but we would otherwise see distortions.
Anyway, that's just a thought. I have no idea how these concerns would play out in the real world.