It is not quite easy to know the budget or funds which would be enough for your retirement days, this is because if the money gets exhausted, will you end your lifespan? I guess, certainly no! This is the more reason you first need to have a plan or envision the type of lifestyle you want to have after your retirement period. Saving money might never be enough to cover up for the expenses. It is somewhat unwise to rely only on savings especially if you cannot foretell what problems the future could hold. Saving towards retirement is a basic way of planning but in turn, this money should be used to invest wisely so it could be productive. I do not really come across any retiree who does not have a source of income after retirement. Money will always be spend so easily without realizing and then you will run out of funds and this will bring lots of thoughts which could make you fall into depression and could shorten your life span.
For me, before my retirement days, I will make sure I have a property to my name, either a supermarket, a real estate property, or a reputable citadel of learning, which by this, I mean a School.