Do you need a will if your assets are held in joint tenancies?

Even if all of your assets are held in joint tenancy with a right of survivorship which means that the other person named on the asset (such as a joint bank account) will inherit that asset without it being subject to probate or being an asset to be distributed by the terms of your will and even where you may have other assets with named beneficiaries who will receive the assets at your death such as retirement accounts or life insurance, you should have a will because there may be additional assets that you may acquire later that would require a will to avoid intestacy.