This lack of predictability is scary. But dwelling on and exaggerating the possibilities of pain and problems in a relationship are deterrents to love. No one gets married expecting to divorce. We need to understand both the reasons for our attraction to others and our blindness to potential disasters. Selection of a life-long partner is the hardest and most important decision we will ever make.
Love is blynd.
It is no longer a stigma. But, in certain situations, it is still hard to find a partner. Your life style may be such that you don't meet many potential partners. You may need to change your social habits, e.g. go to church, classes, clubs, political or volunteer activities, bars, etc. to meet more or different people. Friends and family will offer introductions if asked.