Gosh, I'd love to have my mortgage repayment (around that size) paying for a 3 bed house. 2 bed flat where I live.
My salary is £57k (or a smidgen under) and I'm under no illusions about how fortunate I am that I happen to have chosen a field that values what I do to that level. My husband makes much less, and his worn is probably more valuable to society and he works no less hard. After tax, NI, pension and (reduced rate) childcare vouchers I take home a few pounds over £3K a month.
But I would say that it's a very relative thing, both how you feel and how far your money stretches. If I lived in another part of the country I think I'd feel much richer on this salary than I do in this far flung corner of London, because my childcare, housing and probably commuting costs would be lower.
And it depends on your peer group and, in Britain, when and whether you got on the housing ladder. I'm amazed at the homes my peers on similar salaries can afford because they bought their first homes in the early to mid 2000s. We didn't buy ours until 2008, and the difference in what we can afford is staggering. Most of my friends make more than I do, so next to them, no, I don't feel rich. But we get by comfortably, even if we don't have the dream job and the luxury holidays, and I don't think I'm taxed 'to the back teeth', I think it's a fair contribution to society and fair enough, because I'm in a fortunate position in that society. And I'm very aware how lucky I am to be in that situation.