Yep. Even then, 28 - 36% is a lot, even though it sounds like a small number compared to the situation some people put themselves in. Take $100k for a nice easy number, take out $36k for your mortgage expenses alone. Add all the other home ownership expenses on top of that. Add all other living expenses (needs and wants), and whatever little you can afford to save after that. Doesn't leave much left. Now imagine if you loaded yourself up with a mortgage that ate up 50% of your net pay? Personally, the numbers just don't make sense for me. Others have different opinions about it though and find ways to justify spending most of their income on their rent or mortgage.
and people wonder why they end up shit broke. living within your means might seem like a really boring idea, but it sure beats being broke forever. So at what point can you afford it? Depends when you are prepared to commit. It's a huge financial commitment for almost anyone. Technically, if you can afford to make the payments, you can afford it. That doesn't mean it would necessarily be a smart decision though.
For me, I am looking to save $50-60k and shop in the $150-160k range, although any decent homes under $200k are becoming increasingly rare within any reasonable distance of the city. so i'll probably have to compromise some or wait longer, but that's alright. people go crazy with this shit.