No one is ever going to have a 100% website sales conversion rate. Even big name websites like Amazon and eBay have millions of people who come specifically to browse, not to buy, every day. However, that browsing could lead to eventual buying when something is needed and the consumer thinks ‘oh, I saw it on this site for a great deal’. Don’t discount your browsers. However, you should also do everything in your power to make every visitor a customer. You know it will never happen, and so do most other entrepreneurs out there.