Don't know about "most," some find stable, supportive spouses or partners who are willing to be the steadfast and unconditional types...

Brad Feld (Foundry Group and TechStars in Boulder,CO), for example found this apparently with his wife Amy, but only after losing a first marriage: http://www.feld.com/wp/archives/2009/05/feld-weiser-one-on-o...