It's not really blind loyalty, but oddly like a sense of protecting a loyal friend or family member. Zaros may be the most mysterious god, but to me at least, he is the least alien.
Besides my apathetic approach is not without purpose. I fear Zaros' ascension may also be his undoing, by letting Zaros trust me enough to let me in on his plans, I may be able to stop him. Although this is not because I hate him, rather because I don't want him to die.
And before anyone gets any ideas for a fanfic, no it isn't a bromance.