In today's time, most families have two or more incomes to one household and still it is hard to save.
Most of the time, saving is hard because of unexpected expenses such as the increase of rent or gas prices going up and down. You never know what you will be paying payday to payday.
But you will need to try and save a little bit at a time in order to save for a raining day or for that retirement.
If you save all your coins and/or all your $1.00 bills, you never know what it may add up to. Try doing this for one month, then count your saved coins/dollars. If you then times this total by 12 months, you'll have a rough estimate on how spare change does add up.