Earlier quoted context omitted.
they're more like an energy loan, and you better believe there's interest.
I came to the same conclusion after taking modafinil daily for 5 months. I quit because I was getting completely drained by 7pm. I had to hit the bed as soon as I got home, and then slept for 10-12 hours straight. I did the arithmetic and it wasn't worth it. Supposedly, there isn't such thing as a "modafinil withdrawal," but I was nonfunctional for about 6 weeks after I left it cold turkey. Not only that, but because…
Taking modafinil daily, especially for that amount of time was not a wise move. It's a uniquely "safe" substance but even the most avowed users stress not to take it daily even if for nothing more to preserve perceived effectiveness.