Let's look at your list compared to mine – I've highlighted the items that can't be part of the discussion:
1) Take out bag to retrieve wallet
2) Remove card from wallet
3) Slide card into slot in ATM
4) Enter PIN
5) Conduct transaction
6) Remove card from slot in ATM
7) Replace card in wallet
8) Replace wallet in bag
#1 The reality is that most men carry a wallet in their pocket, not a bag, I would suspect. But even if that's not the case, one could make the argument that the phone is also in that backpack/bag. So that entire part of the argument is moot.
#3 You have to hold/tap your phone on the pad on the ATM, no more or less easy than sliding a card in the slot, so that part is moot.
#4 You have to enter the pin with the phone as well, so that part is moot.
#5 You have to "conduct transaction" with the phone as well, so that part is moot.
#7 have to replace your phone to wherever you keep it while driving (cmon, you don't drive with the phone in your hand, do you?), so that part is moot.
#8 See #1 and #7, so that part is moot.
So really all we're comparing here is the physical act of taking a card out of your wallet, and then taking the card out of the ATM after the transaction (since Chase makes you keep the card in the ATM the duration of the transaction on newer ATMs).
And while I am a Chase Bank debit card-holder, it is not my default card (I don't like the idea of debit cards being an open door to my bank account to begin with, so the last thing I would do is use it in "cyberspace"), which then would require thumbing around on the phone — possibly more time-consuming than simply pulling the card out from a wallet to begin with.
I would LOVE a seamless way to use my iPhone for transactions at an ATM, but I just don't see it as all that convenient the way it currently works. It's much like so many stores that accept Apple Pay. The stupid readers rarely work right (or at all), the stupid stores still want you to sign something because they're paranoid and think that signature actually holds-up as verification that you were the one that purchased something, and now we have to worry about "digital skimmers" as well.
And since 90% of places most people spend money don't accept Apple Pay (or any other digital payment method, for that matter) to begin with, you're still required to carry these stupid credit/debit cards anyway.
Until the entire country basically settles on a "standard" platform for digital payments, where it doesn't matter what store you're in or what phone/OS you have, you can use your phone to pay, they're just not going to take off in the way we would all prefer.