I had one that I thought was being sweet to me too. He would jump on my shoulder and hop down onto my lap whenever I sat down, then he would coo and dance and let me pet his neck and head. At some point he started dancing at my feet, trying to grab my hand and "mate" with it, and follow me around at my heels everywhere I went. I've come to realize that these were warning signs.
He bit my dad a few times, then kicked and scratched my sister. He eventually starting this behavior towards me. I have several 1-10 year old nieces and nephews that are around all the time so I decided he was to be butchered in the near future. Low and behold, one morning he jumped out of the run (as he often did) and something got him before I could. I had 4 other younger cockerels growing out at the time so I wasn't too upset. Now I have 2 very good, respectable boys who do nothing like the other one did. They don't bite, kick, dance at me or anything. I don't pet them but they will eat out of my hand, the hens also adore them. I don't worry about the brats getting attacked by either of them unless the kids are naughty enough to try and grab one of the hens (they have been warned).
I'm on the side of not coddling young roosters in an attempt to avoid human aggression. If they do not see you as "one of them" then you are less likely to be seen as an enemy. It is a rooster's instinct that makes them want to be top dog so if they see you as a threat they will try to dominate. Of course every bird has their own personality and I've seen a few very nice pet roos who would happily fall asleep in someone's lap. But if you are wanting a good flock leader it is best to let them be a chicken, not try to make them a pet. Just my opinion.
