Many a founder has referred to their fledgling business as their baby. Pouring all of your time, resources and energy into helping something grow can make you feel like a parent raising a child. But what happens when that baby turns out to be more like Frankenstein’s monster? Here are five popular tools and products whose creators say they wish they hadn’t built. Related: 20 Motivational Quotes from Legendary Entrepreneurs, Leaders and Visionaries (Infographic) The founder of Flappy Bird For a few weeks last winter, it felt like you couldn’t go anywhere without hearing about the travails of an 8-bit bird.