Having a mobile-responsive website is essential for a variety of reasons, including:

1. User Experience: More and more people are using their mobile devices to browse the internet, and if your website is not optimized for mobile devices, it will be challenging for users to navigate and interact with your site. A mobile-responsive website ensures that your website is easy to use and looks good on any device, which leads to a better user experience.
2. SEO: Google and other search engines consider mobile responsiveness as a crucial factor in their ranking algorithms. If your website is not mobile-friendly, it may not rank well in search engine results pages (SERPs), which can impact your website's visibility and traffic.
3. Increased Traffic: A mobile-responsive website can attract more traffic from mobile devices, which can significantly increase your website's overall traffic and engagement. With more people accessing your website from mobile devices, you have a better chance of reaching your target audience.
4. Brand Image: A mobile-responsive website gives your business a professional and modern image. In today's digital age, having a website that looks great on all devices is crucial for maintaining a positive brand image and credibility.
5. Cost-Effective: A mobile-responsive website eliminates the need to create a separate mobile website or application, which can be costly and time-consuming. With a mobile-responsive website, you only need to create and maintain one website that works on all devices.

In conclusion, having a mobile-responsive website is no longer an option but a necessity. It's essential for providing a positive user experience, improving SEO, increasing traffic, enhancing brand image, and being cost-effective. Therefore, it's crucial to ensure that your website is mobile-responsive to reach and engage with your target audience effectively.