I don't think there is anything wrong with you, working on quilt blocks from your scrap bin is still quilting and if you love it, just do it. I've been working hard to make items for a craft table I have for the strawberry festival at my church the end of June, and I've been getting quite a bit done, however, occasionally I just have to stop with those and do something else, something different. I for one would like to see those quilt blocks you have made, I'm sure they are beautiful. Besides, like housework, those UFO's will still be there when you're ready to work on them.