I could have written Snowbells post - very affluent childhood,my sibling and I at boarding school all the way through, horses, tennis, holidays, nice clothes etc etc. and my father wasn't a 'high' earner - just seemed to manage his money amazingly efficiently.
DH is on £100k+, I used to work and earn about £70k (pro rata'd for 3 days a week) but after we had our third child, my commuting and nanny costs took up almost all of my salary, and it just wasn't worth it. We then had a surprise number 4 - and any thoughts of private school (x4) for primary, let alone secondary has gone. I know that we are very privileged - I am a SAHM, we do go on holiday (though 'only' driving to France, in the car - we don't fly anywhere and certainly not long haul!), the children do as many clubs and activities as we can fit in, and we live in a grammar school area in the SE so we are hoping that they will benefit from a very good state education. But we aren't living the high life - we rarely buy clothes/treats for ourselves and I have to budget carefully for stuff. Our mortgage is high, for not a huge house - but as it's in the SE, it's expensive. Both of us wish that we could give them the life we had, but at £100k on fees, net, for the local day schools at secondary, it's not going to happen.....I don't by any means think that we are the squeezed middle, but I do feel that the life the 'middle class' used to have on the money that it was possible to earn as a middling professional costs a lot more nowadays.