Over the last few centuries, laissez-faire capitalism caused vast improvements in the standard of living. The improvements in production helped the workers more than the producers, as capitalism caused mechanization of production: mass production for mass markets. Your radio is the same as a rich man's radio.
The history of mankind before capitalism was one of shortages and hunger, caused by taxes, trade restrictions, and other interferences with human action. These interferences by monarchs, noblemen, clergy, and guilds, benefitted them at the expense of everyone else.
Capitalism ultimately depends on the choices made by consumers. If the market does not want your product, you lose money. If it does, you make money. If you find a way to make a product cheaper or better, you make money. If you don't but someone else does, you lose money when consumers buy the cheaper or better product. Advances in the standard of living are caused by innovators who took a risk on a new process or new product and turned out to be right.
Bad art, music, movies, and literature are caused by the mass marked created by capitalism. They are marketed towards workers who in another era would have been spending all their money on food, shelter, and clothing. These consumers generally cannot tell the good from the bad. However, excellent art, music, and literature were also created under capitalism, and in greater abundance than before. No longer did an artist or writer need a patron for support.
The benefits of capitalism have, however, been ignored by some. Dissatisfied people say capitalism falls short of an imaginary perfect state of society, where there is plenty and everyone is equal. Equality under the law in a competitive economy means that some people will be more prosperous than others. Those others can either acknowledge their shortcomings or they can blame the system and imagine that they were the victims of the unethical connivance of others.
Socialism does not have a way, such as the price system, to determine what the market wants and how badly it wants particular things. It has no way to determine which of hundreds of applications is the best use of a resource. Under socialism, no one is free to innovate and start his own business. The producer, like the consumer, has no choice. The producer does as he is told. The consumer cannot buy another brand. A worker cannot quit his job and go into something another line of work.
Marx and other socialists never presented a mechanism as an alternative to the price system. They never speculated on it. For them, it is simply a matter of faith that under socialism, humanity will be able to evaluate the best uses of every resource. Under socialism as practiced, choice was replaced by compulsion: to obey orders. Those who question the socialist system on this ground, or any other, are not answered with logical arguments, or empirical evidence, but are instead accused of being evil or stupid.
Some people claim to be opposed to communism by advocating a third way. However, Mises points out that while capitalism is based on decisions made by consumers and the voluntary actions of capitalists and workers to supply the market with what the market wants to buy; socialism is not voluntary, but compulsory. Hence, the two systems are contradictory and any partial system will turn out to be an intermediate stage in time between capitalism to socialism.