Take the example of my friend and her boyfriend, right, who earn 60k between them, amounting to approx £3500 a month after tax. Their rent is £1700 pcm, so half their income, because they choose to live in a very expensive area of London with nice bars and restaurants. There is absolutely NOTHING wrong with that - that's up to them.
When DP and I earned that, we really wanted to save up for a deposit, and due to my mental health issues I didn't really do the "going out for the evening" thing anyway, so what we chose to do was pay £600pcm (still CRAZY money, I know) for a room in a shared house, which we stayed in for seven years. Because of this, and because we were lucky enough not to suffer from any health issues which were severe enough to stop us from working, or any other financial problems such as debt (besides student debt), we were able to prioritise saving and we were able to raise our deposit plus a bit left over.
We chose to get less for our money because we chose to stay in London, but again I'm not blaming anyone for that - it was our choice and our choice alone.
I am extremely cautious financially - way over-cautious, many would probably say, but due to the way I grew up, it is because I am so acutely aware that most people are much closer to homelessness and financial ruin than they think. We could have taken on a larger mortgage. We chose not to because for me it would have been too big a risk. I know many, MANY people who say they cannot afford to buy, when what they really mean is they cannot afford to buy a house they want in an area they like.
That does not mean I am saying ANYONE is "not worthy" of owning a house because they haven't scrimped and saved to get one. If my friend inherited 500k tomorrow and could buy a house outright without saving I wouldn't give a shiny shit - good for her. I'm not the one with a chip on my shoulder about that on this thread, you are.