The idealist; There are those who join an organisation even with its disagreeable elements because they firmly believe that it is their vocation and they have great conviction in the greater purpose and ideology of the group. Such people are easily the most dedicated of members in the community embracing its structures wholeheartedly.
The community is itself at this point the reason and thus it’s not necessary to consider further the motivations of people in this category. One can only hope there are a great number of people who will feel this way.