Gwenhwyfar - I think you have accidentally highlighted the sort of negative attitude that leads to people saying it in self defense - I have noticed it on handbag threads too were I hang out and drool at what I can't afford - because nothing brings out the self-rightous quite like a mother spending her money on something just for her that others deem 'wasteful'.
You get people on the shorthaul threads asking for advise eg. for 4* self catering breaks in school holidays for a family of 4 in Spain, something that quite frankly you'll struggle to get for under £1.5k - but that doesn't get the rage about "spending more than some people earn in a month on a holiday!" when you do about spending less on a bag, and daring to ask advice on which one/colour to get. Although this isn't exclusive to handbag threads, but will turn up on any thread involving a woman spending a large sum of money on something that is for her exclusive use/benefit, not for the whole family. (Except art, which is also deemed ok, possibly because everyone else gets to see it too, even if they don't care about it).
Generally, that causes the person being slagged off for spending on an item they want and can afford to defend themselves with "it's my money, I earned every penny, if I want to spend it on a bag, why shouldn't I?"
Asking for suggestions for holidays, furniture, cars, or things that cost much more overall don't get this negative response, mainly because it's not just the woman benefitting from it or because the person judging them can see the value in the thing (even if it isn't a neccessity or needed).
I never understand the mentality that because some people are living in poverty, those who aren't should also live exactly the same way.