Is it beneficial for the company to hire CEO who will not founder of the company; instead of finding the co-founder and hire him for the same position?

An experienced/smart/business savvy/sales/business development person is worth 'their weight in gold'. I just turned down a co-founder position with a company called ICON Smartech for several reasons. However, the CEO clearly conveyed (to me) that his expertise was in 'engineering' (and not in 'business'). When it's all said and done with, it takes a 'team' to have a 50/50 chance to succeed... PERIOD! However, what's most important (IMHO), is 'chemistry', trust, integrity, and mutual respect. If you can't get passed that part with regards to finding a qualified CEO, why bother? Take your time finding the right person for what is (obviously) a very 'key' position with the company. The way I see, it, you will be spending more time with this person than your family (that's the 'reality'). With that said, I wouldn't want to spend 12 - 15 hours a day (or more) of my life with someone who I don't trust... would you?