Whiny?

How come whenever I make a post like my previous one i always end up sounding whiny? I meant it to sound sarcastic/funny, but when I re-read it it sounds like I’m whining. I think that’s why i don’t post very often, what I write never sounds like it does in my head. I read all these great posts by everyone else and theirs are so flowing and clear, it really impresses me. Then i sit at the keyboardI get a mental traffic jam. The good thing is I know that writing is not in my future. And that’s one more career I can eliminate.