I get discusted with most peoples ways but then I remember its not my place to call people discusting just because they don't do it my way!
We have a dishwasher but been unable to use it here (have room in new house yay) but you still wash the odd thing I guess in the sink! Personally I have a sink bowl and under that a silver sink (obviously) that is where my water goes for the squeeze mop then afterwards its cleaned with bleach - always cleaned with CIF or dettol spray too and then the dish bowl goes back in where I wash my dishes but either or wouldn't bother me.
Baby pissing in a sink then dishes? Guess thats ok too because of course its cleaned out afterwards
Only thing I don't personally like is cats/dogs eatting off peoples food plates then using it for their own food. But hey their choice not mine to make too much judgement.