I have a small packet ready to post tomorrow - a present and card for my sister's birthday. She lives about 70 miles away. The postage will be good value - if it goes and if it gets there on time.
The family have already started discussing how to manage without Royal Mail. So far we have come up with meeting twice a year (probably in York, which is about midway), having a meal and a day out and swapping gifts and cards for the next 6 months/year.
Appointments,hospital letters, traffic fines etc. are another kettle of fish. These depend on a reliable service.