Update my web site why?
It is very important to keep your website up to date and current. Out of date websites will have code that can be exploited to gain access to the website and your customer data will be at risk.
Most internet traffic to your website is not provided by people is comes from software programs. Among the internet noise there are programs continually searching for websites with vulnerabilities, and once located an automatic processes will compromise the website.
This will not only be expensive to fix but it could also cause issues with email and general communications.