I'd always thought that if Python was going to go on at all, it'd be nice to get into storylines.
Hollywood is fickle; your career can end pretty fast. If the acting jobs dry up, you have to have something to fall back on. In fact, that would be my advice to kids interested in acting - make sure you get an education too.
I love sci-fi because it leads in the imagination, and I always say it has the most intelligent fans in the world.