Why have a website?

I think it may be important to start by explaining why I used to think that having a website would be a bad thing for a distance runner. I used to be of the opinion that sharing your training was foolish because you don't want others to pick up on what you are doing. Presumably, an athlete should have complete faith in their training and believe that they have a better training plan than the people they are competing against. If one believes this then it follows that they should not want to share their training, it would basically be like a company sharing trade secrets or other proprietary information with their competitors. To be honest, I can still very much empathize with this school of thought and as such, I do not hold it against any athlete who does not want to share their training. To each their own.