If you want funding, it's helpful to show that at least one other person believes in you and will drink the Kool Aid. If you're bootstrapping, it's helpful to

If you want funding, it's helpful to show that at least one other person believes in you and will drink the Kool Aid. If you're bootstrapping, it's helpful to have someone else to talk ideas over with, share the workload with and keep each other motivated and focused. Some of would also be a factor of your personal skills and motivation and the scope of the project. It is certainly possible with the frameworks and hosting options we have today to get a project off the ground entirely on your own. But for larger things or building a "company" instead of a "lifestyle app", you'll generally end up needing multiple people to pull it off.