This is very much true.Seeing as I'm going to go ignored yet again, I'mma just go ahead and give my answer.
A responsible drug user is someone that can take things as directed on the label and only as needed.
The human body is a complicated balance of chemicals. Everything you add to it, is going to upset that balance in that moment or later on.
What happens when we eat sugar? We get hyper.
What happens when we lose that energy? We burn out and crash. We feel miserable, and rightly so.
The same can be said with emotions, like happiness.
If you are capable of feeling happy, but feel like giving it a 'responsible' boost, there's already something wrong if you can't enjoy yourself as is.
Even that little boost can add up to the crash you'll feel later.
Life isn't supposed to be constantly up, nor is it supposed to be constantly down. If anything, most of the time should be spent feeling calm.
That's why we have therapists to diagnose people with things like chemical depression or bipolar disorders.
That's why I hate those people that constantly preach that we should all be smiling constantly because 'we have nothing to feel sad about'. Fuck off. Just because I'm not beaming doesn't mean I'm not content.