When and How should you amend your Will?
It'd be important to keep your will updated at all times. During a lifetime, your legal heirs and beneficiaries must change. If you do not update your Will after major life events of your life it may not reflect your wishes given under new circumstances.
Why should you create a will
If you die intestate (without making a Will), then your property gets distributed as per the laws of succession and not your choice. The law does not know that you wanted to leave the collection of your paintings for your youngest son or you wanted to give all your jewelry to your daughter.