Everything causes it, you can't escape, can't even escape talking about it... BTW, this forum causes cancer. This may be pointless really... But just talk about it. One time, I was talking about it, 2 days ago, my friends elder brother got it. But, in 2 weeks it was cured which is good.
What do you mean what is the point to save peoples lves obviously. Like anyone who could be killed for no good reason. 1 in 3 people have cancer in the UK. So u could save all those people and the others around the world