Prove it.
Altruism is action driven by someone else's interests. It is an impossible system that can never exist in reality; it's an illusion, because interest in the welfare of others is an interest of the individual holding that interest. It is a self intest of the individual.
If someone decides to be irrational and dedicate their existance to the will of others and abandons his own nature to some external force, he has essentially committed suicide. His self is dead, his will is gone and has been replaced by another. Most likely, another that will use his new resource 'till it no longer lives. at all