Kakashi hated politics.
He really shouldn't have taken Team 7 on, no matter how they intrigued him. Sakura posed no problem. She had civilian parents, no real concept of what it meant to be a ninja, and Kakashi didn't know if she'd actually stick it out. Her infatuation with Sasuke would only carry her so far, but he wasn't going to drag the girl into things too quickly. These peace kids were so very different from what he was used to, he was not certain how to gauge them. Only Sasuke showed the normal gravity and blood lust, and Kakashi would not call him typical.
More like broken.
It was taken for granted that Kakashi, as the last possessor of the Sharingan, would teach Sasuke how to use his. Assuming he had it. Kakashi didn't think anything was certain. No one talked about the Uchiha that popped up with the Sharingan, but they had happened. Obito had worried obsessively about his Sharingan activating. Needlessly, but obsessively. Sasuke, well, time would tell if he had more than Gennin promise. He was nothing like Obito, completely opposite and uncomfortably like the Uchiha stereotype Kakashi had grown wary of.
Beyond the unstated obligation people seemed to think he ought to have towards Sasuke, there were other complications with teaching the boy. One, he'd never be satisfied with a moderate pace that Kakashi would rather take with these kids. Two, there was the subtle suggestion he'd gotten that, maybe, Sasuke shouldn't be pushed to his full potential. After all, his brother had gone crazy and slaughtered his entire clan. Enable Sasuke, and who knew what he would do? Kakashi could see it stemming from the age old distrust of the Uchiha. Yeah, the Uchiha were great, after they were dead and couldn't cause anymore problems.
Kakashi didn't have anything against Sasuke personally, but he was getting tired of having pivotal Uchiha in his life. The kid gave him a queasy feeling, and after Obito and Itachi, Kakashi was starting to think, not that all Uchiha were bad, but and he managed to come into contact with ones that ended badly. Obito has caused much guilt and many changes in Kakashi's life, some not really pleasant or helpful. Though there was really no way Kakashi could blame himself for what Itachi had done, he had just had coffee with the boy the morning before. Itachi had seemed exceptionally normal, even cracking a joke. A bad, rather morbid joke, but ANBU humor wasn't very nice either, so Kakashi had let it slide. He;d thought Itachi had been trying, an failing, to be normal.
It didn't make him the best person to mentor Sasuke, who seemed on the path to flying off the handle as Itachi had.
And then. Naruto. Political complications likely to strangle Kakashi.
Disregarding his blinding personality, Naruto was Konoha's jinchuuriki. More than that, he had the Kyuubi shoved into his stomach after the creature had demolished a good portion of Konoha. While Naruto hadn't done it, people had directed their anger at him. Now the kid acted like he had something to prove, which he did, but no one wanted him to prove it. The council was of two minds about Naruto. He was a great asset, but he was also wild and unpredictable. Sarutobi had demanded he be allowed to become a ninja, but now Kakashi had people leaning on him, hinting that maybe, just maybe, Naruto would be safer in Konoha, you know? Wouldn't want someone else to steal their demon box, now would they? Kakashi hid behind his porn when this happened, and the pleasant 'I'm sorry, were you talking to me?' often worked to dissuade people. Not all people, but some. It convinced them he was bumbling and harmless. Just another crazy jounin, that was him.
He felt a little partial and repulsed by Naruto. He was Minato's son, but he was also a great reminder of the man's death. It helped that he didn't act a thing like Minato, but his personality also grated of Kakashi's nerves. The loud bravado was getting old fast, and Naruto seemed to be as socially blind as he was color blind. Orange, really? Was he trying to make himself a more visible target? Kakashi didn't believe in pushing people into the rather damning role of the ninja. Naruto would figure out how to work it or that it wasn't for him soon enough. Kakashi would make sure the kid didn't kill himself before then.
Really, he still couldn't decide why he'd taken on Team 7. They were only going to cause trouble and potential heartbreak. Maybe Kakashi was a cynic, but these kids both disgusted and aggravated him. They were too young, too niave, and had no idea what they were getting into as they squabbled amongst each other. They reminded Kakashi of his own team, and that did not bode well.
No, Kakashi got the feeling the story of Team 7 would not be a happy one, and now he'd shackled himself to another heartbreak.