Interestingly I was about to say that I have considered agnosticism as a default position. Intellectually it may have its merits. But pragmatically it just doesn't work for me.
This may not be true for everyone, but if I were to declare myself to be agnostic, I've (in my own mind) already defined what I am being agnostic about - so I have already formed in my mind a concept of the thing I don't believe in and am staying judgement on that thing.
When people say they are being agnostic in Western Europe and the USA, they usually mean towards the Judeo-Christian god. But what about all the rest of them? What many religious folks don't get is that, in nailing their God colours to the mast, they are declaring themselves atheist towards all the others - all the Hindu gods, all the Greek gods, etc. Thye may say that they're not, that they are all expression of the "divine" etc., but with only a very few exceptions the belief is partisan. For me, there is no more or less evidence for the "god" - i.e. the god who is the current vogue in the modern Western world, the one in the Bible - than there is for any of the others.
That's why I'm not agnostic. Because I can't go through life saying that I "cannot know" about all things "divine", "spiritual" or paranormal. I feel it incumbent on me to take a position and argue it.