I like Shiho,I don't separate Shiho and Ai,they are the same person.Just in terms of looks,I prefer Shiho,(she's a pretty woman,and this is the real identity of Ai).It also reminds me she's an adult,with knowledge,past and experience.
So it's nice to remember that, when most of the times she stays with children,and acts like an innocent little girl.It's so boring to see her being reduced to a DB member,while she's much more than that.
Also I really hope she won't stay as a child,I already explained my reasons in another thread.I personally think it would be like running away again from her fate,and it would be too easy.I want her to have the courage to be Shiho again,facing her real life no matter what happens,assuming her responsibilities.
And a happy ending doesn't necessary mean she has to relive her childhood.It could be one of her relative is still alive(Elena...) or only her staying with Agasa and helping Kudo during his cases.
I think there are many possibility,but staying as a child would't be an evolution in terms of character development.
Then again,Gosho likes the easy way,so I won't be surprised if Ai decided to not take the antidote.
@Hobgoblin2012
I'm sorry that you don't appreciate Ai because of all the Coai/Shinran wars.I suggest you to stop reading all the pairing thread and read the manga(which is way better than the anime).Just focus on the characters and the story.Maybe you'll learn to appreciate Ai (or not,but at least you won't be biased)
I remember I started disliking Ran when I read pairings threads in various forums...Then I kinda lost interest on Coai (thanks to Gosho again) and I began to appreciate Ran more than before(she's not one of my favorite character but I do like her).Maybe it will be the same for you ^^
@alice25: you like Genta more than Shuichi Akai?seriously that's the first time I see that XDXD