To speak for myself, I'm not particularly unstable. I have been in the past, but I was aware enough to know that I was too unstable to be involved with anyone. Such is the benefit of realness: honesty with oneself. At this point in my life, my passions are expressed artistically, but my friendships and relationships are more stable.
That being said I'm not proposing that a 5w4sx should marry a 4w5sx. The idea of it struck me funny.