The most important one for me is the ability to make a transaction without the need of a third party or a middleman. Low fees, fast transaction times, just being a secure place to put money no one else can access and the other features not currently being used that I'm not so familiar with.
So in paypal? Who is the middleman there?
Paypal in the middleman.
Say if I want to send you $100, I need to fund my account with credit card or bank transfer, and transfer my paypal balance to you. You can then withdraw your balance to your bank account.
The company can stop the balance transfer, revert the transfer or ban your account if it wants.
On the contrary, no one can stop me from sending you some bitcoin, and no one can seize my bitcoin in my wallet.