The answer is that I'm engaging in satisficing behavior, not optimizing behavior.<p>When I wanted to start a blog it was there and free.  I've seen lots of other people use it.  And so far it has been good enough for my needs.<p>If I was a serious blogger I'd likely find things I didn't like about it and look for something better.  But until some obvious shortcoming irritates me, it isn't worth the effort for me to find something better.