Every once on a while you come across someone that is enthusiastic, actually competent, and wants to do things to the best of their ability (or a reasonable approximation thereof), but those are few IMHO.
I mean, I know not all people can be interested in all things, but if you say you're up for something, be it a job, project, or partnership, you've got to give it your reasonable best.
I think the need to be kind and nice all too often is abused by their targets. The key is to find a way to be kind and flexible, but not allowing that to paper over rank incompetence or a bad attitude.