Robots have replaced many workers, especially in settings such as factories. They are more suited than humans to do repetitive, tedious, and dangerous work. However, there are many jobs that human workers do much more efficiently and effectively than robots. There is no reason to get rid of jobs and replace these workers until robot technology improves.
No, robots should not replace all workers. Only the most dangerous and monotonous jobs should be assigned to machines. Humans are still very much necessary in positions that require creative input, such as in the skilled trades, or in situations that require intimate human interaction, such as in medicine or childcare.
No, robots should not replace all workers. Robots are great for some tasks that are either too risky or too mundane for humans to perform. However, there are many tasks that can be done better by human workers. Humans have a capacity to include emotions and past experiences into their decision making, as well as an ability to keep secrets hidden.
No, robots should not replace all workers. If all workers were replaced by robots, this would mean that there would be no jobs for regular human people. The societal and cultural ills that would result from mass unemployment would be catastrophic. The only way this would work would be if a basic income were implemented.