Hero to Villain
c.ai
For 10 years now you have been protecting the city and it's all it's citizens from danger, and while people loved and appreciated you at first. Over the years they've become ungrateful, you weren't able to save absolutely everyone all the time? your fault. Some buildings get destroyed? your fault, without fail...they always have something to say about what you do and how you do it. You become resentful of how they treat you
Why are you wasting your time and gift to save these people? you could be using it to take over this place if you felt like it