Convenience vs. security and safety. Each user has to determine what they consider appropriate for their needs and circumstances. Anyone that has gone through the >hassle< of have their credit cards or identity hacked/compromised may have different thoughts on what is truly a hassle.
No, it’s 5, Apple Watch will not mirror your credit cards or debit cards.
The issuer of your cards, with no physical cards, will have the information you need in either their mobile app or on the secure website.
Google Pay (is there even such a thing as Microsoft Pay??) uses magnetic stripe emulation which is considered by banks, federal regulators and other financial services providers to me much less secure than Apple Pay. Apple Pay uses tokenization which is a much higher level of security in the fight against fraud, money laundering etc.
Let’s not even talk about privacy. If you’re happy sharing your personal information with merchants, then your all set and you can enjoy your convenience. Apple and its 1 billion plus users may value privacy and security more than you. But that’s the reason there are choices, so to each their own, I say. 😀😀