Took the kids down to the loch today for a swim/ picnic in the late afternoon sun. Whilst technically free apart from a little bit of petrol, we seemed to have a lot of stuff. UV suits, beach shoes, shorty wetsuits, bouyancy aid, lifejacket, paddleboard.
My mum was a single parent on benefits for most of our childhood. I grew up on a council estate and we hardly went anywhere on daytrips not even to "free" places like the beach. The exception being every few years when the council would fund a scheme to take deprived children out and about 
Is it the stuff that holds people back? The cost of traveI? I grew up in Edinburgh so lots of free places a bus ride away. I didn't make it to lots of places like the botanical gardens or the Dean gallery until I was an adult. I totally take my kids though.