I already have the NS Flex free weekend subscription (with 1st class addition) and it's the only way for me to travel longer distances. It's also just about the only available public transport in the neighbourhood because I live in a polder.

Nearest train station is a 35 minute walk, nearest supermarkets are almost an hour walk. One advantage, before Covid and I had groceries delivered, mandatory walking back and forth three times a week to the village did wonders for losing weight.