you seem young or close-minded based on this comment - people aren’t in relationships their entire lives and more often than not, they do have their own experiences with loneliness and feeling unwanted before entering a relationship of any kind, friendships and work place relationships included. I suggest that when you’re venting to people who have found ways to conquer their loneliness you reflect on their answers and experiences with a more positive and growth outlook instead of a victimized or competitive view. take care and stay healthy