I used to be like that. I used to vent in journals on LJ, on Furaffinity, on Twitter, etc. It's pointless. Sure, it's possible to have good friends over the internet, but mostly you're writing to people who don't even know you, who are complete strangers to you, who usually don't have time to listen to silly personal rants like those. What's the point then if you're not writing to anyone who knows you or cares about you?
It can be a bit more personal on Facebook since you can't duck behind an internet alias (a fake name, maybe), but it's the same situation, you're venting mostly to people who have never met you face to face, and thus to most people nothing said can be taken at face value. And getting internet sympathy for things like this is one of the most superficial and almost condescending forms of "love and respect" a person can gain, in my opinion. It means nothing. You're trying to gain pity from people on the internet, hundreds, possibly thousands of miles away, most of which you'll never physically meet in the course of your life.
Personally, my gripe with Facebook is going onto someones page, seeing they have 2,897 friends, and wondering..."What in the hell?" Then it hits me, that most people on Facebook, and Twitter, and LJ, see one comment written by one another, start chatting on AIM, and all of a sudden they're the best of friends, even though they've never met in real life. It's kind of like Furries, a fandom I was part of once upon a time, but not anymore. They find one another, internet chat for a day, and declare themselves soulmates for life. I know that's not what EVERY furry does, but I've seen extreme examples of that, and it's pretty scary because of how realistically possible it is, to believe that some people in this world have such low self esteem that they could turn to things like that.
So yeah, I feel you Hermosa. Venting is one thing when you want to get something off your chest or when something really bad happened and you need to release, but when you do it just to garner sympathy from "alleged" friends and complete strangers...that's just sad.
Sorry if I sound cold in this post; it's just the way I see things.