Whether insensibility is a vice?

Objections

Objection 1 : It would seem that insensibility is not a vice. For those are called insensible who are deficient with regard to pleasures of touch. Now seemingly it is praiseworthy and virtuous to be altogether deficient in such matters: for it is written (Dan. 10:2,3): "In those days Daniel mourned the days of three weeks, I ate no desirable bread, and neither flesh nor wine entered my mouth, neither was I anointed with ointment." Therefore insensibility is not a sin.
Objection 2 : Further, "man's good is to be in accord with reason," according to Dionysius (Div. Nom. iv). Now abstinence from all pleasures of touch is most conducive to man's progress in the good of reason: for it is written (Dan. 1:17) that "to the children" who took pulse for their food (Dan. 1:12), "God gave knowledge, and understanding in every book and wisdom." Therefore insensibility, which rejects these pleasures altogether, is not sinful.
Objection 3 : Further, that which is a very effective means of avoiding sin would seem not to be sinful. Now the most effective remedy in avoiding sin is to shun pleasures, and this pertains to insensibility. For the Philosopher says (Ethic. ii, 9) that "if we deny ourselves pleasures we are less liable to sin." Therefore there is nothing vicious in insensibility.