Cookies are small text files sent from a web server to your browser whenever you visit a website. They are either saved or rejected, depending on your browser settings.
Saved cookies allow servers to identify your computer. This means that during return visits and when using password-protected areas of the website, you can avoid the hassle of repeatedly entering the same data.
In short, cookies make it easier to browse websites which require manual data input.
Please be advised that enabling cookies is recommended for the best user experience and full site functionality. Nonetheless, cookies can be disabled via your browser settings if you so wish.