How about you think, for maybe 10 seconds or more? Even the most well designed machine needs cogs. Most people are just a cog in the machine. The cog doesn't add value, it just makes the machine work. But of course those cogs are still needed and therefore employed.

Entrepreneurs build the machines. Everyone else is just cogs or highly specialised components.

Try looking outside of your little bubble once in a while. Just for one day pay attention to what the vast majority of working people are actually doing.