My supporting POV on selfishness motivating human moral values

[CapnAwesome]

Well my alternative point of view is that human actions are inspired by multiple things, selfishness only being one and probably just a small part of it.

I actually have a pet belief of mine that boredom is probably the key motivator in the universe. Even for myself, and I would say I rank way above average in the selfishness department, far more of my actions are inspired by boredom than selfishness. 

Have you considered that the actions you take because of boredom are in the pursuit of self interest? I mean, that seems like an obvious cause and effect. 

Am I conversing with you on these forums because I am selfish? No.

I'd argue that you are, in fact, conversing on these forums for reasons of self interest. Or, is it your argument that you get absolutely nothing out of this at all. No mental or intellectual stimulation. No satisfaction of your curiosity about the thoughts and beliefs of others. No reinforcement of some of your own thoughts and values. 

You would argue that your presence here is a complete act of selflessness?

This is a very good example of my point. You've just made the definition of self-interest include everything. If the definition of self interest is so broad as to cover the entire motivation of curing boredom much less anything that provides mental stimulation, then it's a useless phrase that just means 'everything you do' rather than anything useful at all.