Nothing justifies your decision to perform a procedure like the hapiness evident in your pet after it has been completed.  It’s tough to know how much a recommended procedure will help your pet until after you have gone ahead and done it!  That’s hard medicine to swallow, I realize.  Nonetheless I see this phenomenon time and again.  Case in point: I recently removed retained deciduous teeth (baby teeth) from a dog and now he is acting great, is less moody, and seems like a different dog according to the owner.  That’s music to my ears!