Dishwasher Buttons

Ok...so I warned you that some of my wonders, might be a little weird. Tonight I was about to start my dishwasher, and for some reason tonight I noticed all the buttons I could chose from. This is dishwasher is about 10 years old and until tonight I had not even noticed these buttons really, I just pushed normal and wash. That made me wonder, do some people really use all these buttons? When we buy new appliances I think we always want all those new fangled buttons...BUT, after we get home with this new appliance do we really use all that stuff? I wonder......