Because crusaders who sacrifice more important values in life such as work, family, and friendships for “the cause” often end up disillusioned. This is especially true if fighting for long term change like the morally Right where the explicit rewards may initially be few and far between. Remember, it is your life, and the fact that you should be in control also means that you should always try to maintain the right priorities. But if you have your priorities straight and want to be involved in a major way for the long haul, don’t let anyone stop you.
Think Right or Wrong, Not Left or Right 