DISCLAIMER: this is somewhat grandiose / grotesque, but that is just who I am as a person. Seriously, I cried writing this. You should try hysterical sobbing from time to time, it feels great!
I took your comment as a writing prompt of sorts. Imagining what a direct response to such an accusation would be. So keep in mind that the 'you' refers to the hypothetical speaker in this case.

What, do you think that people are born stupid? Or that people are born junkies strewn out in the alleyways like garbage? Or that people are somehow born with an attitude of laziness? No. Stupidity is something that is cultivated by the stultifying institution of education. Laziness is cultivated by the function of work today. People no longer live to work, but work only merely to survive. The process of a persons very self-expression has been robbed of all meaning. You grow up to go to work every day, 9 to 5 'till you die, die having known nothing, having built nothing, having made nothing.

We are destroying the planet, we are going to go extinct, and for what? Look around you, and what do you see? A bunch of funko-pop trash to sit at a store front. You go to the grocery store and get to buy 1 of 50 different kinds of ketchup. Meaningless garbage--to die for! The existentialist will cry out the maxim: 'Make your own meaning!', but by what means do people have the ability to? We are all continuously lobotomized by work made meaningless by it being imposed, by learning being made a process of fact memorization rather than a creative process of concepts, by leisure itself becoming a reflection of work, and so on. There is no change without a change in the world. To say 'make your own meaning' without acknowledging this is to be reduced to a quietism--always receding towards an inward-looking imaginary world that is forever impotent in addressing our very real problems.

You and I, we have no purpose. Humankind itself is without purpose. I say that it is high-time to give it one. To free ourselves no longer shackled slaves to the grind. To cultivate within ourselves the process of self-expression through not work, but labor. The outcome of a steel-mill is no longer an exchange of time for money--an ability to merely keep surviving--, but the material reflects your effort to shape it. You can truly say: this is a part of me; it is something I helped create. Suddenly then your concern expands, it is no longer a incidental mysterious object that exists so you can get paid, but maintains that meaningful property: I created this steel, which went on to be made into a railway, a building, etc. Imagine then, if all things were held in common, without the imposed fetters of artificial scarcity, violence of poverty, money, and profit, the common goal of a universal humanity: the improvement of the world. You say that socialists are merely lazy, well I say that capitalists are not only useless, but they rob the world of its very capacity to be meaningful, they rob us of our lives, and turn us against one another through ruthless competition rather than cooperation.

And if you say that it is impossible. I will simply ask: who told you that? You would lack imagination--something created by the self-preservation instinct of an unjust few. The truth is we haven't seen anything yet. The fact of the matter is we do not know our own limits. I am a communist because I believe in grasping our own destiny and future for all of humankind. I am a communist because I believe in the realization of our potential as a species. This sorry, decrepit state of the world today cannot continue to exist. This gift of life, of intelligence, of communication cannot be squandered by thralls trudging through the day. A better world is not only possible, but it is necessary. Endeavor to try.