Agreed. Take as little as possible and if you really feel you need something, you can buy it locally (often for much cheaper). It makes you realise how few things you need in life, and how much crap you end up buying back home.
This is in contrast to buying a $100 Patagonia super-awesome lightweight shell, that is certainly better than that cheap sweatshirt, but that you need to treat as a prized possession and carry everywhere.