If you really love it, nothing will keep you from your writing. There are too many disadvantages in this field to do it for any other reason than that you really love it. There's very little money in the field. Well, very little, actually. People who aren't familiar with science fiction associate it with ray guns and monsters, and they just can't imagine that an ordinary woman like me would be writing about subjects like this.
Science fiction is pretty low on the totem pole in most people's estimation.
So no prestige. So there has to be some inherent pleasure that you get out of it. I certainly do. But once I decided it was okay to write, ideas just flooded out. It is always amazing to me how quickly ideas bubble up once you start the process.