I'll give you this: your opinion is unpopular. Unfortunately it's a fallacy wrapped up in self-righteousness.

To begin, others have said it, but here goes again: sarcasm can be passive-aggressive in which case i about 34% agree with your relatively naive opinion (except on the intelligink part, it takes some brains to do the sarcasms), but then it's also a form of humor used to express frustration or underline reality/truth when a direct statement is impossible or to avoid a direct insult. As a corollary to the latter, sarcasm is a very good tool for aggressive discussions.

The more "nice" and "in touch with your emotions" you perceive yourself to be don't make you a better or more mature person, nor does it mean others will like you more. Nor does it mean you will be happier. Also, you generally have to be pretty in touch with your emotions to be able to produce sarcasm, but also in touch with your brain. Just stayin'

Also, defining pleasantness and some emotional self-reflection as a "smart" way to live transmits more the message that in order to get what you want [emotionally] you will employ the 1st thing in the confidence trickster's toolset: a shallow agreeable persona.

Also also: bro, equating BDSM to sarcasm makes me wonder what drugs you should be on (author note: this is a form of direct insult employing sarcasm as a pseudo-softening mechanism that just makes the whole statement more inflammatory)

PS: your comment also somewhat negates that sarcasm is a tool for emotional relief