Someone or something you definitely could live without.
One word that didn't exist 10 years ago: Facebook.
I have written here and here about how I love to hate the social networking site to end all social networking sites. Just last night, I begrudgingly logged on, because I needed to do something besides sit on the couch and vegetate, to find a friend request from my most recent (circa 2004) ex. It is bad enough he has moved back to the area and I have to see him in person again, but now he wants to be present online as well. I'm letting him dangle in friend-limbo (Frimbo, perhaps?) for a while. Eventually I will approve and then hide him from my newsfeed. I could really care less what is he up to, but I don't want to be that girl who denies friendships on Facebook. (Do you see why I hate it? I shouldn't care about being that girl, but I do.)
I've recently become friends with Little One's mom on there, which I am still sort of paranoid about choosing to do so, but its too late now. The damage is done, the friendship requested and approved. No turning back. I saw it as a peace offering, and as a chance to let her put together that I am the same girl she used to stalk on Myspace so many years ago.
I have seriously considered deleting it multiple times in the past 6 months, but then my healthy dose of "I won't know what's going on" fear kicks in, so I just tend to limit time I spend on there.
Cue U2 singing With or without you....because that's me and the Facebook.
In all seriousness, I could live without it, but I choose not to. I'm too invested at this point....too many pictures of my adorable niece have been uploaded, so some days I pretend like it doesn't exist and I actually, you know, spend time with my friends in person.