It seems like you're projecting your own bias onto those who disagree with you. What makes you think the GP is young, childless, and well-off?

I oppose this, and I certainly don't fit your preconception.

You'd be right if I said all young people feel that way and all parents above a certain age felt my way. But I didn't say that, and I don't believe that. To rephrase: it is alarming the rate at which young, childless, and well-off do not support family-centric public policy.

Do you make a distinction between "projecting" and simply having an opinion? I do.

You said "It's alarming how easy it is for <group>" - that does not imply that you are alarmed at the rate at which something occurs, but that you believe that the condition is an attribute of group membership.

My sincere apologies if I've misread your intent, but it certainly seems to me that you've taken a viewpoint with which you don't identify, and assigned it to a group with which you also don't identify.

If you have any evidence that young, childless, well-off people tend to hold these beliefs, I'd love to see it.