I have a tendency to hang on to clothes for all sorts of reasons. There are the pair of "skinny jeans", you know the ones that represent hope and possibility. No one should purge those! There are also clothes that have memories (like that itchy bulky sweater I bought in college) that really should go. When it comes to kids, the thrifty and environmental choice can be to hold on to clothes to hand down to the younger siblings. I buy unisex snow boots, rain jackets and other gear for that reason. However, I did learn my lesson that hanging on to too much stuff can also be wasteful. I have two daughters, 7 years apart. I saved all the older one's baby clothes out of nostalgia and thrift. When the younger one was born, I was shocked to open those boxes and see that baby clothes really do go out of style and I didn't like a lot of what was in there. For seven years I was hostess to these boxes when those clothes could have served several other babies while the styles were still cute and in good shape. Now I try to pass clothes on to someone who can use them right away and find other's second hand clothes for the kids.
Here is a closet purge idea I recently heard about that you can try. Hang all your clothes backwards on their hangers. As you wear them, turn them around. By the end of the season, whatever you haven't worn goes. See our links for local donation options or make some extra cash by taking them to a consignment store.