Get Rid of Dead Weight on Facebook

What annoys me more than anything? When people post stupid shit on Facebook over and over again.
What annoys me even more than that? When I have to hear people in person complain about the stupid shit other people post.
When it comes to said annoyance number one I, myself, have a great solution: I just simply delete the person. This means that if you post anything that falls under the categories of sick and crude humor, anything about peeing yourself because you were too drunk, anything racist, sexist, homophobic, etc. you're getting chucked from my list of Facebook friends. The thing is, I love me some Facebook controversy. It's so much fun to read people getting pissed off behind their computers and typing in ridiculous comments on Facebook. However, when you are the kind of person that does this all of the time, you get really annoying.
Which brings me to said annoyance number two. I do not understand why people do not utilize that "delete" button more often. If someone is seriously annoying you, chances are they are not your friend in real life. So why do people feel compelled to stay "Facebook friends" with dead weight? I don't want negative friends in my life, so why would I want to have negative friends on Facebook?
Too often when someone tells me about a mutual "friend" that is inappropriately Facebooking, I usually can say, "Yeah, I deleted them a long time ago." Usually in this circumstance, people will roll their eyes at me, like I'm immature for taking the time to do that. The thing is, I work hard to maintain a positive environment in my offline life, so why wouldn't I apply the same standards to my online life?
Another phenomenon that never ceases to amaze me is the reluctance people have to delete friends that they actually are not friends with -- or never were. Think about how many people in high school you friended that you didn't even like then, and yet, they are still "friends" with you online. With a click of the button they have access to everything. I'm not saying that every Facebook friend you don't know well is stalking you, but I do not understand why you would want that person to have access to your pictures, thoughts, etc. or why you would want access to theirs for that matter.
In real life interactions, if you do not like a person you probably will not do much to seek out their company. However, on Facebook, it seems like some people stalk their "frenemies" even more than some of their best friends. There's nothing that ticks me off more than hearing a daily update about a person I hated in high school. Move on, let go, make new friends in real life that you can add on Facebook -- and delete the dead weight you don't need anymore. In order to grow as a person, you need to let go of negative people. Even if it is just a tiny annoyance, why not just get rid of it?