You only need to print pictures that turn out well. Images on your computer are easy to edit. You can correct pictures that are under- or overexposed, crop them to select just the part you want, or even remove unwanted objects. If you publish newsletters or magazines it's very convenient to be able to take the pictures and use them straight away. You can also email your pictures to friends and family, or display them on your own Web pages.
Digital images can last a long time.
In fact they'll last as long as the media on which they're stored. Each time you need a print, just go back to the original computer file. On the down side, digital cameras are more expensive than comparable film-based cameras. Whether a digital camera or a film camera is best for you depends on how you plan to use the images, and whether the convenience offered by a digital camera is important to you. You're likely to find you'll take a lot more pictures using a digital camera than when using film.