OK, so I guess it's a vice then. Good that some random person on the Internet was able to set that straight for me by just asserting it with nothing to back it up.

Glad that you totally got the tone of my message totally right. Maybe I didn't need to include the hint!

How the hell am I supposed to guess the sarcasm or lack thereof behind written form? Your 'good luck trying to guess the tone of this message' could be interpreted as the former sentence being sarcastic, or be interpreted as pure condescension for me "not knowing better" or being coy.

Yeah, I set a bit of a trap for you. That was kind of mean. Rest assured that if we were having this conversation in person everybody would be laughing.