NOLOCK is not a good habit at all. In fact query hints in general are a last resort and should only be used when you REALLY understand what they are doing. If you are unsure, avoid them.
Before you claim that NOLOCK is mandatory for your query you need to fully understand what that hint does and the serious issues it can and will bring to your system. Here are 3 very excellent articles describing what happens when you use that hint.
http://sqlblogcasts.com/blogs/tonyrogerson/archive/2006/11/10/1280.aspx
http://blogs.msdn.com/b/davidlean/archive/2009/04/06/sql-server-nolock-hint-other-poor-ideas.aspx
http://www.jasonstrate.com/2012/06/the-side-effect-of-nolock/[/url]
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Cross Tabs and Pivots, Part 2 - Dynamic Cross Tabs - http://www.sqlservercentral.com/articles/Crosstab/65048/
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Understanding and Using APPLY (Part 2) - http://www.sqlservercentral.com/articles/APPLY/69954/