EVERYTHING!! I honestly could go on for hours so I am going to shorten it a bit here hmmm....let me see... I will make a list of my top three reasons. Okay so here I go I order of best most liked reason to the least:
1. He is funny! So of you might not agree with me but he is one of the funniest tyrtles (next to Mikey of course)! He does not even try to be. Examples are endless!! Watch an episode and listen. You'll than see.
2. He is smart! Okay so that one is clear. Everyone knows that but it is still important to his character and one of the main reasons I like him.
3. Weird but true... He is romantic. No I don't like that Donnie is in love with April but it shows his sweet side. Like Spike to Raph. I would not like for April to be dating him or anything but I do like the chit chat comments he has about and to her. Its funny and sweet.
These reasons are all my tops together really but I guess if I HAD to pick top fav reasons and there order this is it.
I like him because he's so much like me, smart, kind, and sarcastic. Also because of his gap. (I have to give him that it make him adorable.) Oh, and he's smart, and geeky. Also he's tall. Also he has purple! Love purple.
I like it when he tells funny jokes. Like in the episode "The Pulverizer Returns", Donnie goes "Text message from you know who.", then Leo and Raph look at him because they know who it is,but mikey looks at him with a question mark over his head. Then donnie goes "Text message from everyone but Mikey knows who.",then mikey gives him a thumbs up. He's so funny
I have actually written about this in a lot of detail for myself before..
I love that he is geeky and smart like me. He's sensitive, caring, and understanding. He can read between the lines. I also love that he embraces his knowledge - he strives to be accurate and he doesn't let his brothers' disinterest stop him from learning.
Sometimes Donnie isn't appreciated but when it comes down to it, he has a huge part in the team's' success. Where would they be without his weapons, inventions, and ideas?
The guy is responsible for the t-phone, shellraiser, smoke bombs, the turtle submarine thing, built his own laptop and desktop computer out of trash and constantly uses them to help in finding locations and decoding. You can't tell me that isn't awesome.
I love the symbolism in his bo-staff: Flexible, far reaching, unassuming, and surprisingly efficient.
Also, who couldn't love that little gap in his teeth...