what subject should I pick to argue in my argument calss?

[tTigGeRMoTht]

It was my turn but I didn't know what subject should I pick for arguing so my teacher gived me time and said next time you have to say something.
plz help me come up with something interesting(10 points)
like last week subject was" The influence of architecture in our life"

 

[justsomeguy]

Why people should wait until they're in their 20's to have sex
Why we should be using hybrid cars
Why the internet shouldn't exist