Not bad doesn’t mean your ideas or actions are good, they are simply not bad, they can be neutral.
We all can be not bad, we can exercise, avoid bad habits, go to bed early and so on. But does that automatically make us good? No, unfortunately not.
To be good you need to do more than you need, more than you are asked for.
For a restaurant to be not bad means serving food that won’t poison you, but I guess that wouldn’t be its marketing campaign.
To be a good friend it’s not enough to be a good person, you need to apply that, be a good person to your friend.
If we start using renewable energy and electro cars and will find a way to live in balance with nature, that still makes us neutral. What good things are we doing?
Just because you don’t do anything bad doesn’t mean you are making something good. There is a lot of grey area between good and bad which is called neutral.
To be good, you need to be better than that, more than neutral. Being neutral means there is no difference that you lived at all. Do you want that? To know that your being here doesn’t make things better, that there is nothing good done by you. I guess not.