Nor in Scandinavia. Driving, or riding trains, you often see cows grazing on pastures. Of course, that is not in the slaughterhouse, or when their young are taken away from them, but I still wonder whether their life on average is worse than mine. (I am also going to die one day, and adjusted for my greater understanding I am not sure mine will be a more pleasant death than a cow's.)
Should you hope that you are doing good? Perhaps not. For a number of cause areas you should probably hope that you are achieving nothing, or actually doing harm. Eg, if you are working on x-risk reduction you should hope what you are doing is not neccessary, in which case you are probably doing harm by reducing growth.