Designs are something that can make your sales up or down. Having an understanding of user behavior is essential. Moreover, hiring a UX/UI design agency makes the process smooth. On any condition, to grow your business and build a brand, you must stand out from the crowd. And to do so, you must invest in user experience.
Source: https://writeupcafe.com/how-user-experience-design-adds-value-to-your-website/