A will is perhaps the most important legal document one can ever have. Everyone should have one. It allows you the opportunity to control exactly what you want done with your property. It allows you to give your property to who you want it given to or to not give your property to people you don’t want to have them.
It allows you to control the distribution of your estate. It allows you to control tax consequences and issues. Most importantly, the key word there is control, you're in charge of your property.