bitcoin is not at all evil. it doesn't have any brain and so i could say that bitcoin is not a eveil not a good one but its the way how we use the currency. if we use bitcoin for good cause then its fine otherwise if we use bitcoin for bad then that's our problem not bitcoin's.
Bitcoin is a currency and paypal is a service. Using bitcoin is easier and hassle free as compare to paypal. Those who know about bitcoins are now switching to bitcoins as they know that paypal sucks and ask too much fee for their service. Bitcoin will soon overcome Paypal and other such services.
I honestly doubt that bitcoin will overcome Paypal due to its cheaper fee requirement because as you can see the current recommended fee which is now required for a transaction to be confirmed fastly is increasing significantly if this problem keeps on continuing it'll definitely become a disaster for bitcoin and there's no more sentence "Bitcoin is cheaper than Paypal".
In another hand, bitcoin still advantageous on other categories such as its simplicity and so on.