This chart clearly is incomplete. The dimension of tolerance is missing. Can I really take a Xanax every weekend and consistently feel as good as my first time

This chart clearly is incomplete. The dimension of tolerance is missing. Can I really take a Xanax every weekend and consistently feel as good as my first time with it? And not feel bad the other days of the week? (the same way as alcohol) If so then I guess everybody should trade Alcohol for Xanax, is that so simple? Also Khat is the best on this chart yet I believe that it makes you feel extremely tired the next day. That being said the topic is really interesting and I am looking forward to a better rational chart.