Because half your audience is probably scrolling on their phones right now. Over 60% of web traffic comes from mobile devices, and if your site looks like it’s from the dial-up era on a phone, people will bounce faster than a kangaroo on caffeine. Google also ranks mobile-friendly sites higher, so ignore mobile optimisation at your own peril. A responsive, slick design means more conversions, happier users, and better rankings. If you’re still rocking a site that forces visitors to pinch and zoom, you’re handing potential sales to your competitors. Time to get mobile or get left behind.