Why is vaping so popular among teens?

Some may do it cause they think it makes them cool and bad*** but it really isn’t cool and it affects your lugs majorly . Some may do it to get away from stress or someone who is trying to quit smoking may do vaping as like a crutch to help them . Main point is never do it it doesn’t make you look cool it isn’t cool and if you have stress or other feelings like this just go take a walk in the park get some fresh air . Both smoking and vaping are eq as bad for you .

Explanation:

when comparing the cases, what similarities are there in the cases that suggest one person committed these murders?