I'm better off now too and so are my DC
Before with my x, he used to spend 40k on a car but if I'd stayed with him, I wouldn't have been allowed to work, because I was the dogsbody, I would have been pleading with him for money for braces etc...
As it was, I was able to work, save, make choices. When it comes to money I ask myself, will this matter in five years? In three years? so, yes to the braces and no to the shopping trip to new york with my school friends. It is what it is.
I'm very happy with what i decided to spend money on. Bricks and mortar and braces! And the DC went to the right schools for them both state schools, my x might have insisted on private schools but I would have been begging for a bit more ''allowance'' and I would have been the poor mum in any circle of mum friends.
It would have been awful for all of us.