What is immutability and why should I worry about it?

Question

I\'ve read a couple of articles on immutability but still don\'t follow the concept very well.

I made a thread on here recently which mentioned immutability, but as

Answer 1

Let me add one more thing. Besides all that was mentioned above you also want immutability for:

• value objects (sometimes also known as data objects or pojo)
• structs (in C#/.NET) - see stackoverflow question about boxing