Why keeping your web browser up to date?
Many security threats that you can be subject to when you're browsing the web are phishing sites, viruses,identity theft, trojans, spyware, adware, and other sorts of malware. Many browser updates will deal with these issues.
Whenever you have the latest version of any browser you know that you have the best browsing experience you can have. Display and loading speed of a page are at its best with an up-to-date browser.