the reason i support a gai is not because i think it's ideal. ideally, you tear down the wage system altogether. ideally, you abolish currency.
the reason i support a gai is because it's the fastest way to approximate what life would be like in a post-market society, with the full understanding that i'll never experience that, in my lifetime.
i'm never going to experience communism in my lifetime. but, i might get to a gai, if the situation aligns. so, pragmatically, it makes sense for me to support it, out of self-interest.
but, i'd rather that we didn't have money at all than that they send me a little every month, absolutely.