For some, it is possible, but many people are unable or unwilling to retire early due to the fact that their monthly expenses outweigh their prospective non-working income, forcing them to work to meet the costs. Yet, whether or not to retire early is a personal decision.
And that is because they realize that what they have isn't going to be enough to sustain all their needs. To be honest, the older we are, the more expensive our costs are going to be.
Even if you're a good saver and budget man, it won't be enough for you to retire early because what matters is how much is coming to you.
Well, if someone is going to retire very early, it's doable with a couple of million dollars and a lot of passive incomes are going to do fine.