So after reading that the reason to save is to restore to a lower level.... What is I have no plans to do that?
One reason for blobs is for a downgrade, but in modern times the primary use of blobs has been to support the re-restore of the firmware you currently have once it is no longer being signed.
Rather than answer your question, I would pose another one...
Has everything that has ever happened in your life gone according to the plan you had at the start, and have your plans never changed?
Just because you don't want to do something today, does not mean that you have forseen all the possible situations in the future which might cause you to change your plans. It takes around 10 mintues to save your blobs the first time using TinyUmbrella. We have a tutorial here -
http://www.ipadforums.net/jailbreak...01-how-save-your-shsh-blobs-tinyumbrella.html
If you think that would be a wasted 10 minutes, then that's your decision to make
My advice would be to do it, because you never know what might happen in the future to make you change your plans.