ROBOTS ARE THE FUTURE
The professions of the future are very much geared towards new technologies, engineering and robotics. So if you still don't know what you want to be when you grow up, you should focus on those areas.
Asimov's famous 3 laws of robotics say that:
1 A robot may not injure a human being or, through inaction, allow a human being to come to harm.
2. A robot must obey orders given it by human beings except where such orders would conflict with the First Law.
3. A robot must protect its own existence as long as such protection does not conflict with the First or Second Law.
Following these principles, and always ensuring people's well being, how can a robot offer you junk food?
Excess sugars and calories? Not at all.
The flying lantern or sky lanterns.