Why do people have an iPhone/phone and an iPad?

Are they just showing off or something? What's wrong with apps on the iPhone? I know iPad has awesome features more than the iPhone. But is it really necessary to have an iPad rather than a laptop?

Well, iPads hhave their ups and downs, but it's mostly hype. Plus, there's a large screen, and it's a bit more portable than a laptop.

But that's just my opinion

Well, they must like the 'new things'. Plus, iPhones are phones, iPads aren't. But I really don't know.