There's a saying: "keep moving you can't steer a parked car"
So true, you need to build up a bit of momentum to move forward.
If your website isn't being updated, how's it going to have any effect on your business? As pointed out yesterday Onsitenow use MODX to create our client's websites. MODX gives you creative freedom to change the design around, and re-develop the functionality of your site.
So don't just let your website stagnate, keep adding, keep innovating. Steer your business.