Why does paper still exist?

Why do we still use paper? That's so weird because we have all this technology now. Shouldn't everything be done on our iPhones or iPads since its 2018? Paper is very outdated.

IPhone 5s won't turn on nor charge?

The screen is black. Trying to charge it for longer periods of time didn't help. Home button is not workings so I can't do a "power thingy".
This is how my problem started:
1) I started having problems with charging but they were fixed by putting a charger in a couple of times.
2) Battery drained very fast with charging problems still present
3) Phone turned off when it eventually ran out of electricity (I was doing it every morning but this time it just refused to charge).

I've tried:
- Different chargers
- Different outlets
- I opened the phone and saw no visible signs of damage other than the camera cable being detached
- Cleaning up the charging port

What I've noticed:
- When I plug my phone in I can hear a noise coming from the adapter (not a loud noise, just a "charging noise", I guess)

I would appreciate any help, I really need my phone.

Help with scam potential scam on eBay?

So I was on eBay and found an iPhone for $280 and I thought it was too good to pass up. Messaged the seller and he said he used cash app for all transacations for him to get full profit. I eventually caved and said I'd give him the money (against my better judgement). Anyways he's answered all my questions and told me cash app is fine and has good support center. He apparently sent the package but didn't send a link yet for tracking. He said his girlfriend had brought it for shipping. I've gave me a window to expect it. My question is if he fizzles away what do I do? Who do I contact? Can I get my money back? It's embarassing. This is why I don't use eBay I'm so not knowledgeable about these types of stuff.