niceguy-
There are two types of flat tax, one which asks for a flat rate of tax, the other which asks for a flat amount.
Indeed, the rich would pay more under a flat rax rate, but then again 10% from someone who makes £100K is the difference between a medium-sized yacht and a large yacht, while 10% for someone on on minimum wage is the difference between affording to feed your kids or not.
So, no, not fair.
And I fully accept trickle down economics isn't perfect at all. Capitalism is a wasteful system. But i've said before, it's better than the alternative. I'd rather be poor in a capitalist trickle down economy than any socialist/communist economy. How about yourself?
You make about a half dozen errors in this paragraph:
a) The criticism is not that trickle-down economics isn't perfect. The criticism is that it is an utter failure. Wealth doesn't trickle down in this way. The graph of share of income shows this.
b) You equate trickle-down with Capitalism
c) You make the error that there is only one form of Capitalism: trickle-down. Whereas there are many different forms of Capitalism, some more egalitarian and civilised than others.
d) You equate socialism with communism
e) You think that a democratic socialist country exists; one doesn't.
To answer your question, I'd rather live in a social democratic country, like the northern european countries (Germany, Denmark, Sweden, etc.) where there is far less wealth inequality and poverty, and the health and education systems are public and to a very high quality. Though I agree, these social democracies are now under attack, as Capitalism infects everything like a disease and must constantly be fought against.