Do you pay if a Kickstarter fails?

As a curious investor, I'm wondering about the financial implications of backing a Kickstarter project that ultimately doesn't succeed. Specifically, I'm asking, "Do you pay if a Kickstarter fails?" I understand that the platform is all about supporting creative endeavors and taking risks, but I'm keen to know if there's any financial obligation on my end if the project doesn't meet its funding goals or encounters setbacks. Clarifying this aspect would help me make more informed decisions when considering my contributions to such initiatives.