We've forgotten to respect clothes and consider who made them and where the material came from. We've been encouraged to buy things and, if we don't like them, bin them. When I grew up, we'd repair things or alter them.
The concept of Shwopping is so clever, I think. The idea is that every time someone goes shopping, they can take an unwanted item of clothing and pop it in the recycling bin in their M&S store for Oxfam.