:)action is the fulfillment of the will, and one cannot act against ones own will, so any action is the fulfillment of the will, and thus it is self serving at the outset of action.quote
This is an argument that has protracted past the realm of ad absurdum into the loops of tautology. One cannot have will without an action and vice versa, being that as in an argument as stated above even inaction is an action that serves the will. Aside from this an action that serves the will has little to nothing to do with the wellbeing of the individual who's will/action it is. The crux here being that altruism as practiced are actions of self harm in some sense, not just simply, non-self serving.
"What is often called involuntary actions are reactions in sequence with other systems in the body. Your biological rhythms are reactions in sequence to the movements of the spheres, for lack of a better word."quote
I was going to say this myself, except you put it better than I could. So this raises the question as any action is voluntary, or completely voluntary. If there are voluntary actions the law of averages would imply that throughout all humanity someone somewhere would have had to have acted altruistically. If actions are not completely voluntary altruism cannot be proven either way.
:)There can be will without action/reaction, if one is confined or physically restrained from responding to the stimulus in question. The sorrow of losing a love one or watching a loved one die by degree, what is often said, "I feel so utterly powerless." It matters not what the will wants there is no action that would fulfil its desire. I nowhere stated that there is no altruistic behaviour, I said there is no such thing as pure altruism, because whatever you decide is going to be your REACTION you must then put your will behind it, thus, fulfiling that will is what REACTION does at the outset of reaction.
:)Reactions are not involentary, in that they are choices. What is totally involentary is that you will react in some way. As stated earlier even a considered lack of response is a reaction to the said situtation------is a reaction. Altruism is only self-sacrifice at times, the heroic deed, putting your life on the line. There are numerous small examples of altruism seen throughout ones daily activities, people being nice to one another. There are of course, failed attempts at fulfiling the will, where the considered reaction fails to get the desired results through its reaction and so, ones will is frustrated.
:)If you realize that there is only reaction, it would necessarily induce a rethink of the belief in autonomy, freewill, cause/effect and last but not least, pure altruism.