Without a current and valid will, there is no guarantee that your assets will be transferred on your death as you want. By leaving a will your wishes are known.
Without a will, the state government’s order for distributing assets will apply. If you have no family as defined by that order, your assets could even go to the government.
Without a will, if you are married with children only from the marriage, the law now provides that your spouse gets all of your assets. However, if you are married and have children from another relationship, your surviving spouse does not get all of your assets. In that case, your surviving spouse is only entitled to the personal effects, an amount of money prescribed by law and 50% of the balance.