Can we expect bitcoin below $50 ?

I am new here, will bitcoin price reach to $700.  So that we can buy it at good price.

Some experts who says bitcoin to completely crash is it true ? One of the reason said is virtual currency having no physical form and at least no transferable physically can not be recognized by  retail public users.

I think if there is any other coin next to bitcoin it is only ethereum.  From the beginning it has been next to bitcoin . Holding and buying is not a risky for ethereum .

I have read some quotations of great personalities of the world,
“Bitcoin is exciting because it shows how cheap it can be. Bitcoin is better than currency in that you don’t have to be physically in the same place and, of course, for large transactions, currency can get pretty inconvenient.”

- Bill Gates
Founder of Microsoft

“Bitcoin is a remarkable cryptographic achievement and the ability to create something that is not duplicable in the digital world has enormous value.”

- Eric Schmidt
ex-CEO of Google

“Virgin Galactic is a bold entrepreneurial technology. It's driving a revolution and Bitcoin is doing just the same when it comes to inventing a new currency.”

- Sir Richard Branson
Founder of Virgin Group and +400 companies

What these people want to say ?  does they mean Buy or Sell? or hold ?

We listen many times and every where on the internet about peer-to-peer, decentralized while reading about Crypto Currencies , can it be explained in detailed for a new bie.

Transaction fees is not fair, but buy  and sell fees at various exchanges is quite unfair. 

Will anyone explain about Erc20 token and their Wallet Support .

I am new here , Is  there any wallet where Bitcoin ,ethereum and litecoin can be placed or stored in a single wallet and can be interchanged .

Bitcoin is perfect no disadvantage , lack of knowledge of handling blockchain wallet and non reversible transactions prevent for its use, transaction fees for sale and purchase is high.

Bitcoin is capped with limit, "  21 millions coins". value of anything is determined by its supply and demand. You can read at the following post    

 bitcointalk.org/index.php?topic=2396722.0

My thought market moves in zigzag motion, to gain momentum. No market moves in straight lines

In a banned account deleting the post will do it or not ?