Well, lots of people back off those dosages once they reach their goal weight and have minimal difficulty maintaining. As we know more about the long term effects of staying on the drug, it's totally possible it might make sense just to keep on it.
But as someone who spent a good chunk of their early adulthood having no problem with healthy habits and then slowly slipping into tons of bad ones, getting on tirzepatide has made it as easy for me to make those healthy choices that I made when I was in my 20s. Ones that I struggled with mightily after I got fat.
Hopefully more and more people will use them as a tool to help them get things back and order and then stay there, whether or not they keep taking it.