I don't have a problem with saying it, since the Bible says it. But, I admit, I'm a bit hazy as to what the Bible means by it. Well, let's put it this way: when I consider that creatures love -- and often love evil -- it makes me think that not all love could be the love that the Bible says God is. But in the text, no "some" or "all" quantifier is used next to "love", as in "God is some, but not all love," or "God is all love". Yeah, when it comes down to it, unfortunately, I'm definitely not well-studied or certain on the question of what exactly is meant by that.