Building software is fun. Spending countless hours or even days on something to get it finally working. Helping someone who uses your software to speed-up the daily workflow. All that is fantastic and every developer loves that. But don’t let the dark side come up, when customers are pointing you to a lot of software defects. Are you still proud and will you continue the work as how you did it before? Most likely not. Or well, lets say at least not when quality is what you want to ship.