Haven’t used cash since the pandemic started in the UK. Covid encouraged even market traders and street food vendors to move to contactless payments - which were just about the final holdouts.
Yeah, there’s no change for Intel Mac owners really. Given Apple will still be selling Intel Macs through 2021 and likely 2022, I’d expect them to be fully supported through something like 2026/7 (though your exact model may vary depending on its current age).