Just how many of those users are unwilling users, however, is somewhat of an unknown. While most people do believe that Google is the much better search engine and even though most people consider Bing to be an inferior alternative to Google, Bing still has a significant user-base. Owned by Microsoft, Bing has been around for quite some time.
Bing is the second most commonly used search engine in existence, next to Google (duh!).