What is Wrong with having Hard Water?

For bathing, washing dishes and clothes, shaving, washing your car and many other uses of water, hard water is not as "efficient " as soft water. For example: 
• with soft water you only use 1/2 as much soap to wash your dishes or your laundry so you will save money. 
• hard water and soap combine to form "soap scum" that can't be rinsed off, staining all surfaces and dries leaving unsightly spots on your dishes and shower walls. So with soft water it is much easier to keep these areas clean. 
• when hard water is heated, the hardness minerals are re-crystallized to form hardness scale. This scale can build up inside your pipes and hot water heater, causing premature failure, and costly replacement. 
• If your water is hard, soap scum remains on your skin even after rinsing, clogging the pores of your skin and coating every hair on your body. This serves as a home for bacteria, causing diaper rash, minor skin irritation and skin that continually itches. 
• for many industrial uses, hardness minerals can clog equipment requiring expensive de-limeing processes.