Hehe, Simba is definitely one of my favourite characters, after Kiara. He's strong, smart, and simply... The main character in TLK which wouldn't be what it is without him.
I also agree with SimbaObsesser. Simba isn't that bad in the second movie as it's usually taught. He's just a typical father, that's all. Try to think how would you feel if your child would every day run off, and by that you knew that your enemies live somewhere near?
He simply cares of his baby, loves her... And yes, he is too overprotective but the only thing that I judge him for is that he didn't want to listen to Kovu when he came back. It's ok that he was mad but... Any way he apologised in the end. Everyone makes mistakes, ok?