The right is contingent on a duty to leave the land in a comparable state to what you found it. If you were to vandalise or litter, you could not be charged with trespass but you could most certainly be prosecuted for vandalism and littering and a land owner taking action would certainly be the one to get the sympathy.
I think the freedom to roam in general has a substantial impact on reducing this problem - we're taught about these rights in primary school, but also taught about the corresponding duty to leave campsites etc. as we found them, and to be considerate about how we exercise these rights.
I think the freedom to roam in general has a substantial impact on reducing this problem - we're taught about these rights in primary school, but also taught about the corresponding duty to leave campsites etc. as we found them, and to be considerate about how we exercise these rights.
Of course, there's always some assholes.