I guess I should elaborate.
Disgust is an emotional response. Like panic, anger or sadness.
Emotional responses cause biased reasoning. Once you've inserted emotional bias into the equation, it starts to skew your views of the situation. You start marking things as "bad" and "good", which is counter productive. Because then you try to eliminate the bad and keep the good without realizing that it doesn't work that way.
It's like trying to solve a Rubix cube by doing one side at a time. You can't do it. You have to get everything to move into place at the same time. You can't just get one side right and then try to get the others to line up without breaking it. It's futile.
Having some good and striving to keep it pristine will not allow you to fix everything because you're limiting your options based on your own emotional bias.