What is your opinion of the idea that worldviews can change over time?

I perfectly agree.

When a person is still young or lacking in life experience and exposure to the world, they may hold a different worldview than they will much later in life when they have seen and lived much more.

Additionally, a specific experience or encounter may completely alter their way of regarding the world and their environment. People, human nature and societies are characterised by change, growth and progress. Thus, it is natural that many factors may influence worldviews over time.

Additionally, changing times and eras may hold new events and circumstances that may cause a unique shift in the worldview of many members of a particular community.  

Explanation:

This is something of a generalisation, but hopefully it helps :)    

reasoning from several particular examples to establish a general principle