I think it depends on what you (or your organization) want to do in a intranet (or with SharePoint in general). As a consultant, one of my customer (a great international company) has a sharepoint 2003 intranet completely customized, also the navigation between areas is customized. I think they would respond "No" to this poll...because had a lot of costs in developers and consulants.
But if SharePoint (as out-of-the-box) fit your requirement, the answer will be a "Yes"...