"Kill yr blog. 2004 over." says Paul Boutin. Reasons?
Everyone should blog. Reasons?:
You don't have to put up with comment trolls. Especially with a low-volume site that pretty much only attracts close friends. There really aren't many downsides to blogging unless you're really paranoid about security (and if that's the case, you should be cleaning your assault rifle instead of reading blogs ;).