Profit is that amount of labour that the worker has stolen from him :swords:
The is the standard buffet. If a worker deems his labor worth $10 per hour, and he is thus paid, it is not theft if the item is sold for $11. Should the worker decide that his labor is worth more but that is unattainable in his current situation, then he has the right and the ability to change his situation by taking his assets (his experience and his labor) to another producer or to begin producing on his own.
Whether an item is sold for profit or not has nothing to do with whether the worker can retire or not.
Sure it does. Profit does not occur just at the point of final sale but at all points of production. This is partly what a value-added tax is meant to curtail. If a worker needs $10 an hour to make his expenses and he earns $10 per hour, then he possesses the ability to save up for neither charity nor retirement. If he makes $11 per hour then he has $1 to put aside for his own purposes, be it immediate involvement, charity, or retirement. To accommodate this the widget he produces would be sold at an amount more than the value of his labor. Additionally, the widget will incur an added value to facilitate profit at the level above his, and so on up the supply chain.
Contrary to over a hundred years of ideological thinking, profit is not evil. I will go even further to say that profit is what allows us, all of us, to maintain our own personal lives and hobbies. For if we never made profit on our labor or production, if we lived to provide only for our needs and the needs of others, then we would do nothing but labor from the time we wake until the time we rest.