It might surprise you to learn that over the long term dividends make up a large part of a share portfolio's returns. In a study by Elroy Dimson, Paul Marsh and Mike Staunton (see Keeping faith with stocks) it was found that "The longer the investment horizon, the more important is dividend income."
And for retirees, dividends are the life blood of their investment portfolio. While growth in the value of the portfolio is important in order to keep pace with inflation, it is the steady stream of dividends which pays the bills.
Even though I'm not a retiree, I still like dividends because along with my regular savings, they provide me with the cash to make further investments without the need to sell existing ones.