Cant be tired because I dont have children
Not that it's impossible to be tired without children but most parents have substantially revised their experience of 'being tired' after having children. I frequently felt tired before having kids, but nothing like the insane tiredness of long-term sleep deprivation that I've now had. Dependent on your circumstances you may have experienced levels of tiredness as or more extreme as a parent, but that would honestly be unusual.
Cant be a good nurse because I dont understand parents
Obvious bollocks, as much as saying you can't be a good nurse because you don't understand old people
Am selfish because I have money to spend on frivolities
Obvious bollocks as you can spend your money how you like
Am boasting when I talk about things that DH and I do
See previous
Spend too much time and money on the dogs
No such thing, dogs are awesome
Shouldnt have dogs as they scare their children (they are geriatric, toothless and blind pugs)
Obvious bollocks, the dogs are probably more scared of the kids
Am wasting my life but not being a mother
None of their business, I don't suppose many of them are curing cancer either
Have no idea what responsibility is as I dont have children
Again, not that you can't be a responsible human being without children, particularly since you're a nurse, but parents have gone through the transition from being responsible primarily for their own selves, to having another person wholly dependent on them basically 24/7/365. You get used to it, and they get less dependent, but almost nobody is truly prepared for what it's like before it happens to them personally. You may be the rare exception.
Obviously you know some pretty horrible people who talk bollocks that you can safely ignore, but I also think it's possible to recognise that when you become a parent you do have experiences that non-parents don't have, and it's very hard to really understand those experiences if you haven't had them.
I mean, I read and watched and thought I understood a lot about India before I went there. But none of it really prepared me for the actual experience of going to India. That's just the way it is. You can't truly know something if you haven't experienced it.