I'm not going to try to convince anyone to start a structured training program if they don't want to. If you think it would be miserable, don't do it. But I would also point out that not everyone considers training a chore. For me, it's a process in support of a goal, but I have come to find a great deal of motivation and satisfaction in the process itself. I don't have a great deal of control over where I finish in a race--too many factors I can't control-- but I do have a lot more control over whether I complete a workout. For me, happiness is hitting all my wattage targets.