Conflict

Opposites attract.

They're also insanely frustrating to live and work with years on end, ad infinitum.

Orthogonality is existential.  Divergent perspectives prevent echo chambers of unoriginal thought.  One knife sharpens another, avoiding design by committee.  Cutting through consensus driven mediocrity requires the dissent of a single unpopular voice.

However, "would you rather be right, or happy?" matters.  Sayer's law identified the inverse proportionality between stakes and argument intensity.  The oft-cited academic example pales in comparison to actual marriage and the figurative one of co-founders.

Consider Steve Jobs (and Steve Wozniak (and Ronald Wayne)), Larry Page (and Sergey Brin), Bill Gates (and Paul Allen), Jerry Yang (and David Filo), and Mark Zuckerberg (and Eduardo Saverin (and three other co-founders know one ever talks about)).  Marriages are all easy at the beginning.  Few survive decades without turmoil, or very public pyrotechnics.

Happy wife, happy life - works for husbands, co-founders, friends, children, commercial partners, and siblings too.

Let that sh*t go (if you can).