Because you haven't given yourself a chance to decide what you want to do in life and attain your goals. It doesn't matter if it's art, writing, etc. Perhaps you are not satisfied with your job and should go back to night classes or finish off college (there is no age barrier for this.) You may be shy and find it difficult to make friends. Volunteer for children's camps during the summer (you can meet wonderful people there your own age) join a church group, etc. There are many lonely people out there and they just quite haven't found the right way or the opportunity to express to others what their wants and needs are. The fear of being alone can also be created by 'panic attacks' that, if not treated can lead to Agoraphobia (Greek for 'fear of the market place.') People with this problem need to see their doctor for proper medications and see a counselor to get to the root of their problem and use Cognitive Therapy a good coping skill. Even people that don't suffer from panic attacks or Agoraphobia would be better off taking Cognitive Therapy courses. It balances one's life. As humans whether some say they don't need anyone there is a very low percentage that don't. We either need a man/woman in our life or simply a good friend you can always count on. Some people have dogs or cats for company and they do help. These are some reasons why some people are lonely:
being alone
rabbits are fearless and doesn't afraid anything
They suffer from a fear of being alone
There is a phobia of being alone or home alone and those people are probably afraid when they are taking a shower alone at home
Crooks is sometimes afraid of being attacked or targeted by others because of his race. He is also afraid of being alone with no one to protect him if something were to happen.
Many people are afraid of being alone their whole life and some people even though afraid embrace being alone as far as not having a spouse or a mate. You may well think you will be alone the rest of your life but fate may have others ideas for you and at any age you can often meet someone you truly love.
Cole is either afraid of the spirit bear ( he tries to kill it, people don't kill some thing they're not afraid of. Well then again Cole does have issues.) or he's afraid of being lonely "...the realization that he was alone, totally alone with himself. And it scared him."
Clarissa Harlowe Barton ,Clara, is afraid of snakes, thunderstorms, the thought of being alone in front of her class. That's at least what a book I read says.
Why are the kids afraid of the neighbor
Her life was like being on a roller coaster with nothing to stop you. If there is nothing to stop you you feel frightened and alone. Afraid of the unknown, and afraid of the known.
If someone wants to move in with you 'just because they are afraid of being alone', I would expect them to talk a lot about their anxieties. Often such people are obsessive about their fears, and it's not something they can easily hide. I'd also expect a certain lack of warmth in the relationship. I hope someone can expand this brief answer.
alone and helpless