Has that really changed?
A manufacturing business in my area is currently hiring everyone who shows up to an interview. They pay they are offering isn't wonderful (at least if you concept of money has been warped by the IT industry), but you should expect to make around $40,000 per year to start. Perusing the real estate listings, I see a three bed, two bath detached home near to that business listed at $139,000.
Rule of thumb says you shouldn't spend more than three times your income on housing, but many suggest you can go as high as five times income. We're at 3.4 times income. It's not ideal, but it seems doable, especially if you want to live like it is the 1940s. The cost of cell phone each month can easily apply $50-100 more to your mortgage payment each month instead.
I will point out that our example job is one that you can walk into and start today. If you take a little more care and look around and risk a few rejections before finding work, there are plenty of jobs that pay considerably more. In those cases, one person buying a home should not be an issue whatsoever. A $45,000 income would provide the necessary amount for the three times income rule of thumb to buy this home in question.