The Concorde Effect: Is it all worth it?
[...] losing $10 is more painful than gaining $10 is pleasurable
[...] Instead of saying that you will get the achievement or trophy if you buy the game
[...] Once we have committed a lot of time or energy to a cause, it is nearly impossible to convince us that it is unworthy
[...] How bad do your losses have to be before you change course?
[...] If you have $50, would you rather lose $30 or keep $20
[...] It is normal to dislike a choice we made… what isn’t is sticking with them even though we know for sure they are not making us happy.