The comparison with heroin frankly is bizarre, as if using LLMs was purely hedonistic activity.

LLMs are tools like motor vehicles. They allow you to get somewhere, quickly but brutishly. You won't be able to appreciate the beautiful scenery much, as it rushes by. You're going to have to compensate for the exercise you would have gotten, had you walked, or it's going to be unhealthy. It's undeniably bad for the environment (electric or not) and has other negative externalities. The politics of many of the countries supplying most motor vehicle fuel to the world are beyond fascist by modern leftist standards. Yet, we depend on them, we have constructed a lot of the infrastructure we need to live around their existence, and even if every city became walkable over night, the last mile for most transport would be covered by some motor vehicle. There are many "what ifs" surrounding motor vehicles where the answer boils down to: "Well, then we're fucked". But we're not fucked today, and so on it goes.

Of course you can try not to partake in motor vehicles, and insofar as you don't make a moral grandstand about it, that's totally fine with me. But the rest of the world is in it for the ride. The first cars weren't very good either.