"New is always better" (Barney Stinson) or sustainability? What makes us happy and why? It can be refreshing to buy something new. No signs of use, modern design, latest features and warranted function for a couple of years. On the other hand, it's a good feeling to have stuff with a long lifetime, because you probably won't have to deal with any problems for a long time. Some things, like mobile phones, notebooks and PCs evolve pretty fast, which is why people replace them every few ye