Well, I'm joking really of course, but I have quite limited space for plants and they bloody well keep growing. Then they need potting on, bigger containers, more space. Then they are too big for the little window sill so what do I put there then? I have killed quite a few in my time, but I seem to be getting the hang of it now. And some are just calling out to be propagated, I mean, how many spider plants can you have? Maybe I should investigate bonsai.