Yekke2: It is a conscious desicion, but it is not coming from a pleasure based motivation. We all have this instictive idea that every conscious decision is made for the purpose of personal pleasure, but I am challenging you to show me logically why that must be so.
PAA: Nothing to do with getting used to. You are still talking within the parameters of the yet to be proven true assumption. We don’t need a personal reason for him to do it. His reason is because God commanded him to. Just like a plant grows when God commands it to, a Tzaddik serves hashem when he commands him to. That is why it is the highest Madrega. He is doing it purely for Hashem and not for himself.
Everyone: The idea of serving Hashem for the sake of serving hashem and not for ourselves is understood by children. We delved into it deeper and questioned it, but after we cleared it up, we are back to the simple understanding. We are ultimately supposed to serve Hashem Shelo Al Menas Lekabel Pras.