What need is there of theology?

…there is [among Biblical scholars] an unwillingness to accept the existence and the significance of theology as a discipline in its own right. One of several roots of this unwillingness is, perversely, the popular Protestant insistence on sola scriptura. When one has the Bible, what need is there for the subtleties and sophistries of theology?
Francis Watson, Text and Truth, p.4

Well, quite. I don't think it is a good understanding of sola scriptura that leads to this difficulty though...