As long as you are 16 years of age or older, you can create a will under South African law.
There are a few pivotal life moments when people tend to have their will drafted, the most common being when buying a property. A property is very often a persons primary asset and they want to make sure that it is passed on to their beneficiaries according to their wishes.
Other typical life moments to draft a will are when getting married, having children or losing someone close to you as it forces you to think of your own mortality.
Creating a will largely comes down to taking responsibility for your estate (everything you own) and the beneficiaries who succeed you.