After your death, your property & possessions may not go to the people according to your wishes.
Without a Will, the law makes presumptions that take the place of your expressed wishes which can be stated in a Last Will and Testament. If you have a Will, on the other hand, you can give your property and possessions as you wish.
The person who manages your property in a succession after you are gone may not be the person you would have chosen.
However, with a Last Will and Testament, you can choose to appoint a succession administrator who you trust to handle your estate in succession proceedings. This person would be responsible for properly distributing your possessions and property after you are gone.
Your special possessions, such as a ring or a family heirloom, is not likely to be distributed a person you would have chosen to have it after you are gone. However, with a Last Will and Testament, you can expressly state the name of the person who you want to give possessions of sentimental value.