For a myriad of reasons. Yes refill pouches use less plastic however they do not solve the underlying problem of single-use waste. All we are doing is replacing one container for another ☹ These plastics are also very tricky to recycle and need a specialist partner to properly dispose of, otherwise they’ll likely end in landfill or be incinerated. Secondly, refill pouches are made from plastic #7, the ‘other’ category. This is a mix bag of plastics that are typically multi-layered resins, including polycarbonates which in some cases could have trace amounts of hormone disruptors such as BPA amoungst others. This being said, we are always on the hunt for new materials and methods to distribute refills, if you know of any that are not harmful to humans or nature, do not add to the waste culture and do not need specialty conditions or partners to dispose of, please do let us know! We would love to investigate.