pickledsiblings, you get to see something you don't like and decide to go elsewhere. Many other people don't because they have no choice.
I really and truly don't think there is a problem in this country with the relatively small group of people like Seeker, who could afford private education, not exercising that choice!
The group of parents who have the biggest effect of making some state schools worse than they need to be is the group that (while making reasonable, justified individual decisions with no malice aforethought) collectively skew the state schools they leave behind. That is to say - the private school users, and the parents whose children go to grammars.
Some of them feel they have no choice because of a particular local school, some feel they would never in a million years send their child to any state school even the most superselective grammar. There's the full range of reasons. But the effect is huge and should be acknowledged.
I would love to read someone say "I think you should send your child to a private school because so many people like me have not used your local state school that its character has been skewed in one direction and there's less aspiration to succeed (oh and also so few movers and shakers use state schools that they just don't need to be as high on any government's priority list)" rather than "I think you should send your child to a private school because people at state schools e.g. don't have enough aspirations" (or words to that effect). I would love to read that even though I would not want to stop anyone making the decision to go private if they really wanted to.
Those of us who have used private education for our children, or benefited from it ourselves, are not the 'goodies' with higher standards than anyone else, we really aren't. We're not evil either, and people have the right to make those choices for their children as they see fit. But we should at least acknowledge in discussions that our choices don't happen in a vacuum - that our choices have effects as well as causes (and sometimes the effects are the causes of the next generation's choices, in a vicious circle). That some of the things we reject state schools for would actually be hugely improved if fewer people did reject them, even if there's no way to make that actually happen.