in a RHD car, pulling out from a parallel parking spot is more dangerous not just for you, but for the poor sap you couldnt see. there really is a reason the drivers seat is where it is on RHD and LHD cars, and as said, its the vantage point in seeing moving traffic. i recall doing a quick park on the wrong side of the road, and coming back later to box truck on either side of me. making sure i didnt pull out and get someone was a pita. now, i always tale the time to face the right way. i can be lazy or stupid and kill me, but i dont want to kill someone else. that would be a situation faced constantly in a rhd truck. instances like that, and others, arnt in the drivers scope of control either.
RHD is for the postman, or people desperate to look cool with a car they cant get here. like having 4 beers and driving, its a risk thats minute and you think you can mitigate with caution, but its absolutely unnecessary, and its manslaughter if something unforeseen happens.