In the Christadelphian Waymark of December 2008 you can find an article on Companionship.
some quotes:
We all need companionship. One of the curses particularly of western society is loneliness. ...
Loneliness can lead to feeling isolated, lead to depression and even lead to suicide. Some people are able to establish new friendships, but for others forming friendships is more difficult. For most people finding close friends that they can trust and confide in, is not easy.
Brethren and sisters in Christ are no different, often family can be far away and we all need companionship. But for us knowledge of the gospel message of hope, brings, or should bring, a totally different perspective. You see no matter what our circumstances, we are never alone!
...
loneliness will not assail us to the point of despair.
...
Our primary relationship is with God, He is our Father and if we live according to the light of His word, then we have fellowship with Him. Fellowship with others who share the same precious faith comes as a product of fellowship with God.
... it is not good for one to seek isolation from those who share the same precious faith. But there are many who live in isolation through circumstance beyond their control, or who go into isolation because circumstances dictate that they must. Those in that position need the support and encouragement of all the other members of the body.
But if we do live alone then we still have that sure knowledge that God is ever mindful of His children. We can all read books about the Truth, read magazines, read exhortations, listen to tapes and in many do things that help to make us feel part of the one body. A husband and wife can support each other, but if companionship of other brethren and sisters is present, then this is a great blessing from God.
If we do have the companionship of brethren and sisters, let us then be grateful for it and make the most of our time with each other. Let the focus be upon building each other up and encouraging each other while we can. Let us never take this benefit for granted or neglect meeting together. Let us be givers and not takers, workers and not hinderers, supporters not complainers. Let us be grateful to God for companionship, yet content if need be to be dwell alone. Though we truly are never alone, for He is always with us.
- Andy Peel