Argh - I'm going to give this one more comment and I promise myself I'll stop.

The idea that the business aspect is in any way 'much less demanding' is like chalk on the blackboard of my brain. This is not an idea or attitude that will serve you either in life, or in trying to find a great co-founder.

You could make the exact opposite argument about the technical aspect, since in startup land there's no point building something until you've validated the customer requirement for the solution you're working on, and then ideally talked to 20-50-100 potential customers.