Why shouldn't young people smoke?

The problem here is that the earlier in life you start an addiction, the harder it may be to quit it. Also, children are more vulnerable to peer pressure than adults and make more decisions based on their emotions.

This is why fast food companies use ads that are attractive to children. They know the kids will beg the parents to take them to eat out. They also know the value of brand loyalty at an early age.
The problem here is that the earlier in life you start an addiction, the harder it may be to quit it. Also, children are more vulnerable to peer pressure than adults and make more decisions based on their emotions.

This is why fast food companies use ads that are attractive to children. They know the kids will beg the parents to take them to eat out. They also know the value of brand loyalty at an early age.