Bitcoin is different than PayPal so it is like comparing Apples to Oranges when it we're discussing about spending our own money on something. From what I know about PayPal is that they need to have another source in order to get their money. Bitcoin is basically like free money because if someone that knows how to make computers more powerful than it already is, they could build a Bitcoin Miner and get money from Mining Bitcoins and they would get whatever currency they want (PayPal doesn't have that feature).
Bitcoin won't overcome PayPal though Bitcoin will be a popular Digital Payment Platform.
You are right - you do not need to compare these payment systems. Bitcoin is more than a payment system. I am sure that they fulfill their functions and will exist in the future
Yes you nailed it. There is no comparison between bitcoin and PayPal as bitcoin has so many features and jargon free which we cannot find in PayPal and cannot expect as well, In other words PayPal is a failure method and Bitcoin is the future as day by day more and more merchants have started accepting BTC and more countries are going cashless so there is a lot in store for BTC which PayPal can never achieve.