Dear god no.
1) It's like saying "That was a joke, get it, get it?".
2) You should all know by now that sarcasm directed at a wide audience will be misinterpretted by someone. So if you try it in that context, you have no one to blame but yourself.
3) Maybe if sarcasm keeps failing, people will try to develop an actual sense of humour. Sarcasm is almost never creative, funny, or original, it's just saying the opposite of what you mean with different voice inflection. It's funny for a year or two after you discover how to do it, in largely the same way that children get a big kick out of discovering how to say "no" to things. (Any time someone describes themself or their sense of humour as "really sarcastic" like it's a good thing, it's usually worthwhile to put substantial effort into never speaking to them again.)
1) It's like saying "That was a joke, get it, get it?".
2) You should all know by now that sarcasm directed at a wide audience will be misinterpretted by someone. So if you try it in that context, you have no one to blame but yourself.
3) Maybe if sarcasm keeps failing, people will try to develop an actual sense of humour. Sarcasm is almost never creative, funny, or original, it's just saying the opposite of what you mean with different voice inflection. It's funny for a year or two after you discover how to do it, in largely the same way that children get a big kick out of discovering how to say "no" to things. (Any time someone describes themself or their sense of humour as "really sarcastic" like it's a good thing, it's usually worthwhile to put substantial effort into never speaking to them again.)