(1) your argument might hold if it was true that the populace allowed a socialistic government for the motives you mention. I highly doubt though that the populace allows for such government for those reasons. It seems much realistic to me that the population votes in socialists because THEY want the benefits…
I’ll give you an example. There are several politicians campaigning on a platform of among other things universal health care. these politicians receive huge support from a significant chunk of the population based on this issue alone. Now, it seems to me that most of the people who support this issue support it for their own potential benefit. It might be the case that there exist some who have altruistic motives in fighting for universal health care, though I would imagine this is a very small percent.
least you think i’m picking and choosing issues to prove my point, there seems to be good evidence that the general population is never altruistic in its voting habits. Consider the tax issue. Has a politician ever gotten anywhere with a campaign where they outright talk about the large tax increases their social plans would require? Very few.It is generally considered political suicide to campaign on a platform of raising taxes, even if for the social good.
I just don’t seem your premise as being the case, though i agree that if it is the case, you are correct.
(2) this is a big claim. why do you say this? what definition? on another note, is real altruism even possible? one can argue that no act is ever truly done unselfishly. For instance, even the bleeding heart liberals who are willing to forsake their own material gain for the profit of others get SOMETHING out of the deal. They get emotional satisfaction. Right now, if they are genuine, their hearts “ache” for the poor starving children in burma. Thus, donating food and money to the poor starving children fulfills a selfish purpose–elevating emotional pain.
also, there seems to be direct biological evidence against your last claim. It has been seriously hypothesized by biologists that the more altruistic social traits are actually conducive to survival. Thus, most humans today poses at least mildly altruistic traits because those traits have been successful. you of course might argue that this criticism does not apply to your second comment, as your second comment pertained to the “purest form” of altruism.
for this, there are other classic arguments against your claim. the obvious one that pops into my mind is Plato’s republic. There, Socrates attempts to persuade Glaucon that the truly just life (aka, your “purest altruism”) is better (in a moral goodness sense) then the truely unjust life.