This is most certainly your decision, but (pardon my big butt)..
There are several reasons to receive a diagnosis...these are my top two:
1) Should you question your need to be gluten-free for whatever reason in the future -- it is a lot easier (well it was for me) to never cheat once the dx was confirmed.
2) Kids -- mine were young adults and teens when I was finally diagnosed -- medical history is oh - so important -- I know I'm adopted. Anyhoo depending how quickly the medical profession catches up -- you will need to be your children's advocate as well as your own. That means demanding regular celiac antibody tests for them minimally every three years or more frequently should any of the over 300 symptoms associated with celiac arise.
Whatever you decide -- we'll be hanging around to help thru the transition.