I know exactly to what you're referring to, because I'm presently in that state of mind. But as much as one would like to be alone, companionship is necessary; that touch of life that we have to see outward and not just inward. The isolation could only go on for so long. The strange thing is that life sometimes forces the interactions, especially when you're comfortable with being alone. Personally, I just let people in just a bit to see the surface, and not what's underneath unless there's some level of trust attained. Waiting until it's the right time with the right people is something I believe in. Of course, I'm still waiting on that.

I have a friend who has been like this. The funny thing was that he wasn't any different, anymore reliable, trustworthy. Ironically, people like yourself can come across as hostile to other people - it can be a very self-fulfilling vision of others. "The love that you give is equal to the love that you get." according to the Beatles.
Are you truely that different from everyone else or is this an attribution error?
Does this have to do with your expectations of other people?
People are complex. Ask yourself the question: if I met other people like me, would I give them enough of a chance (given that they too might not trust you enought to let you in) to find out how wonderful they really are, or I am going to judge them based on their initial hesitations towards other people? Does it all sound a bit circular?

But, there is notthing wrong with enjoying and reveling in your inner world. But your inner world is made up of and is mutual dependent on the external world - your world of ideas can be profoundly enriched by other's inner worlds. You don't have to hope, desire, expect eternal unconditional friendship. Sometimes just enjoying interaction and not expecting to get anything out of it leads to you getting a lot out if it. I too am a bit of a loner and will often rather be alone than with others - just me and my thoughts. But I am often wonderfully surprised by other people - even other peoples seeming stupidity can be interesting fodder for my mind. The world is one big act of interpretation - sociology or philosophy in practice.

Biologically, humans are social animals. We are incapable of surviving without other humans. I do not genrally put any stock in psychology, except as a social tool to make people conform, but the term sociopath is the ideal you are reaching towards. I do not attach a judgement with this, there are many sociopathic tendencies in my personality.

they are worth nothing if a similar spirit or shared activity or mutually beneficial activity is taking place. the need to be among stuff on a sunny day is fine but no-one commits to much even though they demand hello, goodbye, and handshakes. the very thought of being part of a "people" and then getting together and they are at full adrenalin with one or two "not into's". there are others like you on this internet, serious.

Interesting thread,I don't quite feel as alienated as whoever started this thread claims,but I understand the feelings and have been there off and on over the years.I've always been more solitary by nature and that's put people off.Yet I don't shun relationships when they happen,I just find I need more often than not to feel alone not constantly around others.There's nothing worse than an hovering,always wanting to know everything spouse...closesness can be nice,too much is suffocating as hell.As for the bitterness and mistrust,I keep telling myself I'd rather be alone than settle for someone I don't really want to be with.A tough choice a being lonely is hard to bear,but I''ve found I need to balance being alone with involvement and friendship with others.I expect disapointment and hurts. I know I'm not that easy to get along with,not putting myself down,but I can be very critical and harsh with others,emotionally 'touchy'.So yeah,that plus not trusting others too easily is an viscious circle.As anyone who's been burnt can easily attest to,choosing to trust again despite that fear is the hardest thing.Trusting oneself as well goes hand in hand.My 2 cents worth.

We are social beings that are not meant to be isolated. Excessive isolation creates depression. As people stated above, being social and spending time with friends creates happiness within yourself and the people you surround yourself with. If there are trust issues, then that is something you have to work on yourself. The key is finding the right people to be with who share the same values that you do. As we get older, some of us may grow apart due to different paths we take in life. Our values and priorities change which in turn changes the arrangement of the friendship. This is natural and you will find other people to spend time with who share your interests.