I think that your stance on private education is largely determined by financial circumstance, if most folk are really honest with themselves. And also the educational facilities in your local area. It's easy for me to take a moral, socialist stance, as the DC go to an outstanding secondary school, in an extremely affluent area, where most of the other DC of our peer group go to. There are something like 7 kids in the whole school of 1600 kids that qualify for FSM. If they had to go to the local sink school, I might not be so pro state schooling.
Similarly, if you are not in a position to ever be able to afford private education, it's easier to take a stance too. The argument is simply not there in reality.
In the middle, such as AGenie (without wishing to be presumptuous), it's really hard I think. Really hard.
Got to be honest, I've spent more on myself (time and money) this last month than I have for a long time and... I feel great for it. Some is using up old pots and potions, some is buying stuff, some is running again. Folk have noticed. I feel good for it. I do. 
Spends.
£18 nails.
£40 skirt.
£60 petrol.
Tomorrow I update the finances. Just for the week. But think we have done well this month.