For most people (now), their food habits don't deliver very good nutrition in just 1500 calories and the problems with that compound if they're living an active life that needs more nutrients. Neurotic dieters have hurt themselves through that problem for decades, as so much cultural focus in on "calories in, calories out" that they don't even think about whether their broader nutritional needs are still being met during calorie restriction.
Do you find that these drugs have provided any help in making your diet sufficiently dense in nutrition to compensate for the reduction in volume? I hear that they strongly affect appetite and food appeal, so I worry for what it might mean for people who dive in without taking nutrition density seriously. It seems so easy to just buy the drug and let it help you eat less, but that's such a dangerous thing to do naively.