both things can used also for more things but what i recommend you is that you need to use the paypal method as a online paying method and when you use bitcoins make sure you make money with it dont spent it on bullshit,.
Well bitcoin is the same as money actually so do whatever you want with your money. I agree with his point of using paypal as a online paying method though. Not because bitcoin is worse but just because paypal is accepted in more places.