I don’t think this gets us very far. You’re making a utilitarian argument (or certainly an argument consistent with utilitarianism) in favour of not trying to be a perfect utilitarian. Paradoxically, this is what a perfect utilitarian would do given the information that they have about their own limits—they’re human, as you put it. For someone such as myself who believes that utilitarianism is likely to be objectively true, therefore, I already know not to be a perfectionist.
Ultimately, Singer put it best: do the most good that you can do.
I don’t think this gets us very far. You’re making a utilitarian argument (or certainly an argument consistent with utilitarianism) in favour of not trying to be a perfect utilitarian. Paradoxically, this is what a perfect utilitarian would do given the information that they have about their own limits—they’re human, as you put it. For someone such as myself who believes that utilitarianism is likely to be objectively true, therefore, I already know not to be a perfectionist.
Ultimately, Singer put it best: do the most good that you can do.