It's more convenient if you need to pay more than 25 EUR (or whatever the limit is where you live), where you need to use your PIN with contactless card.
Or you use contactless payment with your phone which then does not have a 25 EUR limit (actually I think these days it is more like 50 EUR) since the phone supplies some form of authentication, which a plain contactless card can't.
Maybe I wrongly worded it, but I meant the same thing.
Mag strip or chip, you still need your pin here. With contactless there is a limit of 50-100 EUR, and when you use Apple Pay you never have to provide a pin.