There are a bunch of comments about not worrying about using spray basting because one doesn't expect one's quilt to end up in a museum. There are other reasons not to use it, though. Some people (myself included) try to minimize our exposure to unnecessary chemicals, usually for either health or environmental reasons, or both. That's why, even though it's much easier, I won't use it. I don't consider myself a quilting purist - not at all - I just don't like using unnecessary chemicals. Oh, and I'm a chemist.