You may be big and scary on that level however in a realistic scenario your quite easy to put down.

Since you are a giant, that would indicate your in a highly rich oxygen environment, meaning it was be extremely hazardous to humans
especially at that small size. This would mean on a world that supported you, humans would thrive in places that you would find impossible to breath.

Also being a dragon generally means you are cold blooded, so this means that the environment around you would be much hotter for small humans of that size
to live, let alone survive. because of this humans would be living in the most coldest of parts of your world.

Now as for technologies if, you where on par with humans, then humans will win since, because of there small size, would be extremely hard to detect.
where your massive body would not just send shock waves with each step but your heat signature would be very obvious to heat detection.
meaning that tiny humans will see and hear you miles away and will have enough time to mobilize and hide or attack.

To attack something of your size would be extremely easy for tiny humans, if we are talking about todays humans. When you sleep, a small team of humans
would infiltrate your body by some means, and deploy a viral bio weapons that could easily kill you (same as mosquitos biting people and injecting virus into them)

So in other words, big dragons are not scary, tiny humans who are technological advance are.

Waaaaaaaait man!

Why would humans be against dragons? I mean, why can't it be a nice, playful scenario, with everyone living together juuuust fine? A society with more than one species or stuff like that :3

I was just meaning scary in the playful way, cuz I wasn't able to make the dragon look as I wanted and I thought. Ugh, it just looks like a scary demon :p