I will happily acknowledge my privilege: nice middle class background (although my dad had the temerity to send me to my excellent state school to the horror of his medical colleagues
), free university educated (one of the "Ancients"), got a sought after job from the milk round to a blue chip company on their graduate scheme in the middle or a recession, higher rate tax payer for most of my working life (and happy to do so); happily married; mortgage free, decent savings...
But despite - or because of - that, I'm very aware that those that are less fortunate than me need support and the society is a better place if we do that 
I was brought up to believe that decent education and health care should be available to all. And that we should have a decent safety net and support the vulnerable. It's no coincidence that my dad was a doctor who refused to do any private work and my mother was a teacher (by all accounts an excellent one). 
We've brought up ds to be aware of his own privilege and to believe in similar things. It's no suprise that he too is a pesky Socialist left winger 