I guess it depends on your definition of "ego" but remember, Jesus said to treat others as you'd like to be treated... and I don't think Jesus's assumption here is that you should treat yourself terribly. Some self-love is healthy and necessary.
The separation of the Self from the rest of consciousness is, almost by definition, the root cause of all evil. Without this distinction, evil wouldn't even be conceivable, as our desires would be in line with everyone else's. Of course, at the same time, the Self is still a fragment of the universal consciousness, so it would do us no good to deny it or try to suppress it. All we can do is make a conscious effort to try to see our Self reflected in the experiences of others, and try to feel about those experiences like we feel about our own.
I'm not sure I agree with this.
