Many times I hear folks say that they want to practice on their own, and not join in a Buddhist Community, because doing so gets in the way of their own practicing and sitting. They say that other people or having a teacher are a distraction, take up "my" precious time, are not a benefit to "me".
Well, I say: Don't be a selfish sitter, a Pratyeka-buddha.
There is an obligation, a face of the Bodhisattva Vow and taking refuge in Sangha, to support the Practice of others and not to be a Pratyeka-buddha. Ours is a Path beyond one's personal needs and wants. It is not a matter simply about what "I" want, what "I" need to do or learn, staring into my own navel.
In Buddhism, one who attains enlightenment through his own efforts rather than by listening to the teachings of a buddha. The way of the self-enlightened buddha was criticized in Mahayana Buddhism, which rejects the path of self-enlightenment as too limiting and embraces the ideal of the Bodhisattva, who postpones final enlightenment to work for the rescue of others.
It is much like family and children, who we tend to and spend time with ... whether we selfishly always want to or not, and whether or not we would rather run away. Community activity is vital. Sure, there is a place for "time alone" (whether in my "man cave" in the house or my "Bodhidharma cave" in the mountains), but in the end we have a duty to the community ... and to ourself ... to help and be together.
Self and other are 'not two', and the community leaves us all stronger.