It is better if you are going to say that bitcoin is better than paypal. And it is a good alternative for paypal. Just explain brief and concise.
Like saying literally is a currency by itself.
And you can use it online for purchasing things to selected merchants.
The average person doesn't care about decentralization, they just want fast and cheap payments. Unfortunately the average person is too stupid to see the importance of Bitcoin, so I say forget about telling them about Bitcoin until Lightning is operative. Then when they see the speed and cheap payments they will all come.
a lot of people is a lack of knowledge about bitcoin. well, we only easy to receive something they can easy to understand. many people will be interested.
At it really takes time before they will realize the advantage and convenience what they can get on bitcoin.
As indicated above.