A
 person may say: “Desire, honour, and the like are bad paths to follow 
and remove a person from the world; therefore I will completely separate
 myself from them and go to the other extreme.” As a result, he does not
 eat meat or drink wine or take a wife or live in a decent house or wear
 decent clothing…. This too is bad, and it is forbidden to choose this 
way.
Maimonides, "Mishneh Torah", Hilchot Deot 3:1