I've been in my current place for about 5 years and have never used the dishwasher. Sink works fine and is almost instant if you wash everything immediately.
Personally I think the biggest argument for a dishwasher is that stuff is not in-sight anymore.
They also are more efficient, water wise. Our dishwasher uses 8 liters per wash. If I fill our sink with 8 liters, it barely covers anything. Dish washers use more detergent though, this is why I switched to powder which can be dosed better.