What are benefits and Limitation of using Viewstate for state management?

There are the following benefits of using Viewstate:

• No server resources are required because state is in a structure in
  the page code.
  
• Simplicity.
  
• States are retained automatically.
  
• The values in view state are hashed, compressed, and encoded, thus representing a higher state of security than hidden fields.
  
• View state is good for caching data in Web frame configurations because the
  data is cached on the client.

There are the following limitations of using Viewstate:-

• Page loading and posting performance decreases when large values are
  stored because view state is stored in the page.
  
• Although view state stores data in a hashed format, it can still be tampered
  because it is stored in a hidden field on the page. The information in the
  hidden field can also be seen if the page output source is viewed directly,
  creating a potential security risk.

For Example: Sample of storing values in view state.

ViewState["Time"] = DateTime.Now.ToString();