I'm guessing at some point there won't be any option for it anyway on any brand of phone.

If you're set on sticking with it as long as possible, you may want to wait for the new line to come out and see if they drop the price on the 8 a bit.

If you're not familiar with how to work things without a home button: https://www.cnet.com/how-to/iphone-x-how-to-survive-with-no-home-but...

One takeaway from the link: "Tap to wake up the X. Much like many Android phones, the display wakes on a tap now. That doesn't happen on other iPhones. Raise to wake still works, too."