I think the goal of any infected is to become a bloater. I mean, you'd be dead, but wouldn't you want to become one? lol
Also...could there possibly be anything after a blaoter. Spitter? Leaper? Sleeper (LOL!)
I could see a (parody) scene now:
-Joel, Ellie & Bill walks into an abandoned gym. Back doors open and an infected walks out-
Ellie: F--k! What is that thing.
Joel: That's a uh...that's a...Bill? What the hell is that?
Bill: Never seen that sh-t before! -shoots it-
Ellie: Oh, f--k, Bill! You made it mad! It's growing wings!
Bill: Oh, sh-t. That's not an infected. That's a f-----g dragon! Run!
It looks like the people infected were in a lot of pain, the noises the runners were making, not good. You have to remember, if you're in a quarantine zone turning makes you a danger to everyone. I'd tell some close friends, we'd have a little party, get them to put me in a secure location, and put me down if the time came.
I would probably freak out and then proceed to kill myself.
I definitely wouldn't allow myself to turn as the process should be very painful and frightening... Just imagine being a runner. You know who you are and what is happening to you, yet you have no control of your own body.