I wonder how accurate an assesment one can make after only three months. I've lived in Tokyo for the past two years. Not sick at all. No panhandlers, hardly any grafitti, teenagers are fairly respectul, low crime rate, virtually no theft. I love it here.
Must add that another woman I know moved to Japan (also to teach English) and loves it for the same reason that you do. My sister was extremely disturbed by the Japanese attitude towards women (violent pornography sold in grocery stores, used panties sold in train-station vending machines, women dressed like little girls, etc.)