>>1139Obviously, one shouldn't do good deeds for the sake of obtaining happiness but I do think that a lot of the time that doing good deeds makes people obtain happiness.
While I don't think extreme elation such as from sex or drugs or music is required to maintain sanity I find it hard to believe people can maintain optimum sanity without any joy at all. Of course, the amount of happiness required to maintain sane probably varies with respect to person. Some people probably become depressed or extremely stressed out from very little pain or annoyance and others might be able to struggle on through an extreme amount of trials and tribulations.
Even if you do not think that pleasure is required for a healthy mind do you think that at least the reasonable absence of pain is required for sanity? Extreme amounts of stress really can cause depression and other problems.
Also, maybe you might think that pleasure is not required for adult life but I would argue that pleasure and play are an absolute necessity for the proper development of children and babies.