Is it possible there are "defective" humans in our species?

Yes there are defective people who should have never been born, BUT YOU ARE NOT ONE OF THEM. Sorry, but I guess that means you don't fit in with that group too. Your fear of the unknown and social anxiety is perfectly normal and many people feel that way. Its just hard for you to meet like minded individuals because they are just as introverted as you are. You do need to understand the power of intention because you don't believe you will find someone it changes the way you perceive the world around you, think of your train of thought as a filter that only lets a certain perspective through to your conscious mind distorting the way you see the world around you. If you open your mind to new possibilities(easier said then done, I know) you will begin to notice things you never noticed before, hopefully in the positive and good opportunities to help your life be more fulfilling. You don't need to compromise your morals to do this. Then again maybe I just smoke far to much pot.