Because cooks love the social aspect of food, cooking for one is intrinsically interesting. A good meal is like a present, and it can feel goofy, at best, to give yourself a present. On the other hand, there is something life affirming in taking the trouble to feed yourself well, or even decently. Cooking for yourself allows you to be strange or decadent or both. The chances of liking what you make are high, but if it winds up being disgusting, you can always throw it away and order a pizza; no one else will know. In the end, the experimentation, the impulsiveness, and the invention that such conditions allow for will probably make you a better cook.