I remember answering this question on MN many years ago when my DC were small boys and of course, it would always be them. DH are strapping strong adults and they are small children in need of protection.
And now, hmmm not so much. DH and I are still pretty hale and hearty but with the first twinges of getting older starting to appear and my sons are now large men (well DS1 at 19 certainly is and DS2 is not far behind him).
Things shift as children grow up and away.
DS1 has a life completely apart from our family unit now and that is wonderful and completely as it should be, while I think I would still instinctively seek to protect him if it came to it physically now, realistically if there was saving to be done it would be him making the choices not me.
Financially/emotionally? Well neither of ours will ever be hungry or homeless while it is within our power to stop that, but no I don't see it as my life's work to hand over everything we have to them while we are alive.
We have equipped them well and they are immensely privileged and will be given any 'leg up' we can, but if DH or I need something then I think it is appropriate for us to prioritise ourselves over the boys sometimes.
Things change. I always approached parenting with the view that my job was to make myself obsolete, I seem to have achieved that with DS1. He loves us and spends a lot of time at home chilling still, but has his own life with his friends. Sorted out his Uni and his job and is saving well, all with support and guidance of course but if we vanished tomorrow he would be OK. DS2 younger, but hopefully same path.
So with that in mind. Depending on the context, no, I wouldn't always choose my DC over my DH now. Because they don't need, or necessarily want me to.