Of course, sarcasm is not related to being clever or witty.
It can be useful and funny at times, but it's mostly annoying.
I used to be a little sarcastic at times, but I got rid of that side of me since I came to realize a few things about it.
I can still be a little sarcastic as long as it hurts nobody and only makes them laugh along too.
I'll just say some of the things already said in this topic from my part again:
It depends how it's used.
I hate it when people use it to make another person seem stupid.
It can also be used in a joking fashion which i prefer more.
Most people do it to intentionally annoy people, or because they don't like answering obvious questions. - that is one part I really hate.
Given that I often encounter sarcasm in serious circumstances, I've come to loathe it. It has hurt my feelings a lot of times, and I advice people to make things obvious and go tell something to a person rather than using sarcasm as a device to tell the obvious and prove someone to be stupid.
But if you want to be sarcastic just to make everyone laugh and if it hurts nobody, then it's all good.