''One clarification that often gets left out of this debate is that a better version of PayPal can be built on top of Bitcoin (ie.via Lightning) in a situation where the base layer is used for the digital gold use case. But it doesn’t work the other way around — you can’t build a more secure system on top of a less secure base.''  https://www.forbes.com/sites/ktorpey/2017/11/09/failure-segwit2x-shows-bitcoin-digital-gold-not-paypal/#7938e5972233

Thats about the size of it for me at this point in time.