Even though addictive behaviors are not absent among many animal species it is humans who perfected the escapism into addictive substances and behaviors to treat with reality. The outcome of those addictions is very often a decreased amount of effort put into other aspects of their lives such as social contact or even a pursuit for food. 

Addiction is generally an outcome of escapism or could be formed in process of repetitive behavior with a high-level dopamnine reward. In 1953's Harvard experiment on rats, they had been inserted with electrodes that stimulated the areas of the brain responsible for generating the feeling of pleasure, probably related to dopamine. Rats were further given a possibility to continue experiment by choosing the right lever or to abandon it. To not a very big surprise of the scientists the rats were pulling down the lever almost to the level of exhaustion.(1953 Pleasure Centers in the Brain ) 

If feeling pleasure is such a strong motivation to abandon even the will to live, then what does truly drive our behaviour in presence of so many pleasure sources? 

In 2016, a pair of researchers from the OpenAI project designed a game for Artificial Intelligence that had a clear completion goal but also a set of collectibles which were completely optional but generated a reward mechanism. AI just like humans fell into a trap of running into loops just to collect the most of collectibles in a simple 2D game.(AI Collectibles) 

My idea for robot would explore this concept. The creature I would like to create would perform some set of basic activities but providing it with an addictive prompt would disable some of those features showing us how harmful addictions are for humans' day to day routine. In the absence of the addictive prompt I would like my bot to return to performing its basic functions. A great idea to explore, however, outside of my engineering and programming capabilities would be a progressive improvement in basic functions given a break between one prompt and another.