I think it's YC's choice to favor teams with cofounders.<p>I have a number of friends that are startup founders both solo and with cofounders. The solo founders are just very likely to burn out easily because nobody else is there who understands their situation and can support them.<p>I applied to YC as a single founder last session and didn't get in. I don't plan on applying for YC in the future unless I find a cofounder.<p>That doesn't mean I'm not pursuing my goal. I will continue to work on founding a startup but as long as I'm a single founder, I will not be taking the YC route.