The need for money will be effectively eliminated. We would devote our resources toward the maintenance of the robots, and the pursuits of extracurricular activities. Those who are in charge of maintaining the robots would be our most respected jobs. We don't just want this to come to fruition, we NEED it.
The government gets its revenue from taxes. Eliminating menial jobs would lead to a major decrease in tax revenue. In turn, providing a monthly allowance to the citizens will drive up government spending after taking the hit of mass unemployment. Where is the extra revenue supposed to come from?