Earlier quoted context omitted.
The "just a warm body, any warm body!" mentality is what's so detrimental about the co-founder craze. Both financially (~50% of equity!) and in terms of more risk. It's a bad idea unless they're at least as talented and motivated as you (preferably in an area that complements you), and even then it's dangerous because you give up a lot of control. If it's your idea and your vision, why not build the prototype, get so…
Are there perhaps political reasons for it? Do investors prefer having two or more founders they can divide if necessary? Does it increase "bus factor" or otherwise derisk the venture? My opinion: two or more founders who are really invested and work well together > single founder > forced cofounder relationship. I say this as a single founder. The hardest thing about being a single founder is cognitive load. I don't…
I agree with your priority- a pair of fully dedicated good founders is ideal.