Community and Immunity
"Community" is from the Latin words "cum munio" which means "fortify together". The main action involves not the coming together but rather the fortification [also translated defense or supply]. In other words, community is meaningful [only?] in the undertaking of tasks that an essential organism cannot perform adequately without outside assistance.
The opposite of community is "immunity" from the Latin "in munio" which means "fortify from within". Again the emphasis is on fortification; however, in this case the essential organism looks within [not outside] itself for strength and well-being. In fact, a healthy immune system resists outside interference as potentially detrimental. When the immune system fails, sickness or death soon follows.
It would appear that discrete and thoughtful participation in one's community is wise for those tasks whose result is a shared desire and whose accomplishment by a single individual is unlikely, impossible or duplication of effort. However, indiscriminate participation in communal activity due to an unwillingness to "look within" for answers and solutions to one's questions and problems is an almost certain guarantee of individual decline and communal failure.