Living in a Mission dump trying to sleep three people to a bed is not how you should be starting a business. Why do people think this is how you optimize for success?
I've been on both positions. When I had no money coming in, it was always in the back of my mind and my business ideas were short-sited, not creative, and rushed. They all failed.
I go to tons of startup events where new companies are presenting and the majority of business and products I see are exactly this. I'm not sure if it's because of a lack of experience of the reasons above.
I only became successful when I had money coming in and didn't have to worry at all about it. I could focus on my business goals with a clear head. The money was a part-time consulting job. I was able to quit it after a year because I was making more with my business. It's been going strong for 2 years now.
I guess I'm different. I don't think I would ever go h ycombinator. My first business idea involves very-little up front capital, but has nice returns. I'm going to use the proceedsa to invest in my next idea, that requires some capital. My ideas are always profit-centric. If it's cool, but has little chance of making money, I don't even consider it. I consider those hobby projects I might create for fun.