Nowadays people are beginning to fall into that, "ugh, people annoy me," kind of attitude, which of course I think we all go through at some point, but the effects of such an attitude may be much worse that just having a low key social life. Researchers are coming to the conclusion that being lonely, that is for an excessive period of time, can lead to bad health. As humans we are meant to socialize and interact with one another, it is part of our nature. To what extent do the consequences of being "antisocial" reach? It would benefit all of us to reconsider the next time we think about slipping into that, "I hate everyone," attitude.
http://www.mnn.com/health/fitness-well-being/stories/loneliness-is-bad-for-your-health