I stopped caffeine for a few months a couple times in the past. I came to the conclusion that I am not my best self when I don't have caffeine.

Every single thing I would do that required attention was harder, even intently listening to an audio book while taking a walk. I'm honestly not convinced that taking powerful prescribed stimulants has an advantage over simply enjoying a cup of coffee and/or tea.

The way I think of my caffeine addiction is that I take a daily loan out against my evening energy and focus in exchange for the additional focus during the day.