While there are a lot of parents who, even if they cut down, saved and stretched every last penny would still not be able to afford private school fees, there are a heck of a lot of middle class parents whose priorities lie elsewhere. For many it's either: foreign holidays, new cars, slightly larger/nicer house or private school fees for their kids. My parents, for example, felt that private education was worth sacrificing those things for and I am eternally grateful for that.
Also, there are two 'types' of private schools: the ones that can provide unmatched facilities and cater for the super rich (Eton, Harrow, Gordonstoun) and the cheaper ones that tend to focus on academics which is what draws the middle class parents in.
To claim that everyone who attends a private school must be incredibly well off or have parents in high places is just untrue.
Your post seems to be more driven more by jealousy than wanting to debate this issue.
Btw: There are more than enough threads on this, and no, what you said was neither new, nor intelligent.
DISCLAIMER: I know parents are in no way obliged to pay for private education. I do believe that it's their hard earned money and they can choose how to spend it, whether it be on themselves or their offspring. I merely wanted to clarify the fact that not all private schools are attended by the super wealthy.