I totally agree with you, I'm getting quite tired of them sometimes myself.
The whole problem is that people join and then just ditch. Like, the moment it starts, some few pages in, people leave and no matter how many times they are warned they say they will come back on, but they don't. Even if they had read the rules and did whatever it was needed to prove it. This leaves people who
do RP (like me) and wish for it to continue, stranded, for there is nobody but one or two people who else wish the same to RP with, and it just simply turns to being a half-closed RP - where it's between the two/three and yet everyone else can still add in.
I'd be making Open RPs all the time, but I don't want to get repetitive, taking up ideas of RPs that had died, for once in a few times, I'll run out of ideas. It's just silly, silly to having to keep making up ideas, spending hours finding ones on the internet, and that just after a few pages, the RP dies anyway.
I think a few people feel this way too. Just saying. It's really annoying and sad.
I think that there should be two categories, one for Open RPs and one for Closed.
I heard it was coming in the new Mibba, so I'm waiting eagerly and hoping that comes soon....