Haha, it's okay, I'm tooootally guilty of long comments also. And sorry this reply is kind of late, I also have a tendency of going "omg this comment is EPIC and needs a proper response, so I will set it aside until I can provide as such" and then suddenly it's ages later. Um.

Hmm, yeah okay I can see that. And yeah he's totally not a "plan the future" type of person. You can kind of see in his impulsiveness and his not being careful a whole childhood of being empowered by getting away with mischief. He gets away with doing stupid things all the time (much like Morgana, actually). Merlin has never had to really think things true because magic is more expedient.

I think Merlin does have ambition, but right now he's just ambitious about learning magic. Hmm, or maybe you're right, maybe he's not ambitious, he just likes experimenting around with it.