Just to add, if you think you can raise your child (startup) alone than don't be afraid to do that either. You'll never know, the right co-founder may be just around the corner, if at all
Self-promotion, two articles I wrote on the subject: "I'm a designer who learned Django and launched her first webapp in 6 weeks" http://www.limedaring.com/im-a-designer-who-learned-django-a...
"How to thrive as a solo non-technical founder" http://weddinglovely.com/blog/how-to-survive-as-a-solo-desig...