What is it about smoking up and drinking too much that makes people crawl into a shell of their own, and slowly move away from people? It isn't always the stigma of being an "alcoholic" or "pot head" that drives them in, not everyone is judgmental when it comes to these and can be quite accepting of them, if only a little concerned sometimes. However it seems that smokers and drinkers enjoy being alone, in their own world, away from the rest of humanity so to speak. Sometimes it is this self imposed seclusion that leads to depression of various kinds, social anxiety and even apathy towards everything. Is there an explanation as to why they prefer this isolation? What are your views on this?