system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why is it predators are reluctant to attack us?

I've never really understood why this is the case (as it appears to be the case).

If we start with something like a bear, it is very reluctant to interact(engage/attack/etc.) with a Human, at all. Now I don't understand why, it's massive compared to us, taller, wider, stronger etc. It must know that it could easily take us out if it wanted but doesn't (a vast majority of the time). I don't understand why.

Something like a Great White shark too, they don't outright attack Humans, they 'investigate'. They circle then 'nip', why not just attack us the way they do Sea Lion's etc?

The same for a vast array of other animals, too.

Then there are animals such as the Gray whale that even if they have a negative experience with humanity they will still approach us...
gpt
We're large enough that even a bear might get injured before it kills us, especially since it doesn't know what nasty tricks we may have up our sleeve.

Since any injury can get infected and be fatal, the predator will not take that risk unless it is very hungry and has no other, more familiar prey available. 

And that's not even taking into account the fact that we usually come in groups, which multiplies the threat we represent.