I don't use it, mostly because it tends to be easier to use my credit card.
It may be 'easier' at the time. But when you card information is hacked, and you have to cancel your card and order up another one, it can be a lot of hassle. The beauty of Apple Pay is that your information is useless once it has been used for that one transaction.
Using Apple Pay at every opportunity is a great way of encouraging retailers to adopt more advanced and more secure payment methods than the old VHS tape glued to a plastic card routine that has been the norm since the 1980s.