Why update WordPress, plugins, and themes?
Increase security
Updates to WordPress plugins, and themes often increase security by patching vulnerabilities and strengthening against attacks. To reduce the risk of your site being hacked or compromised in some other way, update!
Fix bugs
Updates to WordPress core, plugins, and themes often fix bugs that were discovered in previous versions. To get the fixed version, update!
Add features and functionality
Updates to WordPress plugins, and themes often add new features and functionality. To take advantage of them, update!