In order to answer this question, we have to know what money is, and then we will know why some people like it and hold it so important.
MONEY can be defined as any good or token that functions as a medium of exchange. It is socially and legally accepted in payment of goods and services and in settlement of debts. Money also serves as a STANDARD OF VALUE FOR MEASURING THE RELATIVE WORTH OF DIFFERENT GOODS AND SERVICES.
In English dictionary, MONEY defined, amongst other definitions, is wealth reckoned in terms of money. In my mother tongue MONEY is “MAA-LEE”, meaning which is mine, what I own, be it coins, a piece of land, a house, etc.
MONEY as a medium of exchange is intermediately used in trade to avoid BARTER SYSTEM.
We, the human beings tend to like to HAVE, not to HAVE-NOT; a feature that was taken, in a way or another, against COMMUNISM. Naturally, the more items you have represent by the medium of exchange; MONEY, the more you will be able to get what you want; easiness, comfort and convenience of living. Therefore, money is very important; it is, in a way, the blood running in the veins of life.
In my mind, MONEY is very important in general, but in particular; on a personal level, it is relative.
Money can not buy real happiness, real love, but may help in attaining to both. Money is transitional, we are born without it. We visit our grave naked and empty-handed. We hoard MONEY in between birth and death. We should not concentrate on hoarding it as if it is our only duty in life. Some people are rich, but are also fools and unhappy. Others are poor, but are Happy and content.
Money is the purest form of representation of materialism. Therefore, the issue depend on what and who you are.