Why do we need to make a will ?

Through Will:
You can instruct someone (Executor/s) to take care off your body disposition & funeral arrangement,
You can pass on your property(ies) as per your WISH and
state to exclude specifically certain family members &/or
state to include some non-family members.
You can appoint a Guardian (person/s whom you trust the most in your absence) to your child(ren) as per your WISH considering their future when you are no more in this World. You may chose such person who not necessarily be a relative or a family member as s/he steps in your shoes in your absence to take on the responsibilities for raising your child(ren) until they become legal adult

Thus a well made Will will:
reduces the risks of undue litigation, delays, misunderstandings & disputes amongst family members or others and
it is the most important & integral part of personal financial planning as it lists the Assets you own with your gifting desire.

If you don't make your Will:
Law will determine the Beneficiaries to distribute your Property(ies) and the same in most circumstances may not be same as desired by you.
Eg. You can provide disproportionate share to say a widowed daughter, social partner, etc. or few other unrelated dependant persons like servant, nurse, friend, etc.
Law of Inheritance is standard followed and thus do not obviously cater to the special needs & requirements of particular person or the circumstances.
Eg. Assume a person has two sons, one of whom is perfectly healthy, the other being handicapped due to polio from childhood. Now the laws of inheritance would treat both these children on an equal footing. By means of a Will, on the other hand, you have the choice of making a somewhat greater provision for a handicapped son.
Law follows standard rules to appoint Guidance to your minor child(ren) and such person may not understand either your wish and your child(ren) future.
All of your income & assets may be frozen until everything has been sorted out by the Court.
State may rule to sell your immovable property/ies as the same may not be dividable to multiple beneficiaries as per law.
State may not be able to transfer property/ies on conditional basis which you can do in your Will.

Considering today’s uncertain times, even if you have very minimal assets today, you should still make your Will:
To declare your immediate desire / wishes on your death,
To appoint Guidance to your minor child(ren) and
If you have wealth tomorrow but no time to make Will later, this Will can be handy.

To avoid “NO WILL” situation, it is important to make a Will for a peaceful division of your property(ies). After all, death is certain, but the time is not!