A personal site should be personal, in the sense that the things you share are things you value and the only value derived from it is from sharing what you value with other. That's why personal sites are the ones that are easy to tell apart. Personal should be personal, otherwise it is simply trying to establish a professional profile.)

Of course, if you have no interest in sharing your passions, don't do it. Your free time is valuable and you should only use it for things that you value.