Some people plain hate us.

"Hatred" is a very strong emotion. We can only hate what has seriously let us down. Only those things can let us down from which we expected big time. We expect big time from people/things we think are capable of big time. That's definitely not a negative thing. We can't feel strongly about something we don't care about.
We can hate somebody for not being good. That's because we think they are capable of it.
Competition makes us stronger by keeping us alert. On-the-go all-the-time. That, in a way, is a very good thing. So we don't necessarily hate a competitor.
But some people do hate us. Out to destroy whatever is pleasure to us. They're plain jealous. They think we'll have it so they're ignoring their chance to success in life and diverting all their efforts and time into our failure.
There are always people who hate us. For whatever reasons. Mostly its jealously. Sometimes its intimidation. But not a third thing.
Of course there are other similar things people can feel for others - loathing? and disgust maybe...but they are different from hatred.