I picked a guy with lots of carisma as my co-founder. I thought he would do the business side and I'd do the technology side. 3 years later I had to kick him ou

I picked a guy with lots of carisma as my co-founder. I thought he would do the business side and I'd do the technology side. 3 years later I had to kick him out of the business. 6 years later I bought out his share for millions. Get a cofounder if you find someone insanely good but it's definitely not required. Edit: The now common facility of founder vesting improves this situation somewhat. Don't rely on that though.