I am not coeliac, but have a 6yo coeliac and a 4yo probable coeliac. I eat gluten-free because they do - our house is a completely gf zone.
In children, I think they now say that a TTG reading (the blood test) of over 100 plus a positive gene-test (another blood test) is proof enough of coeliac, and no endoscopy needed.
If your TTg reading is high (over 100) I think it's very unlikely that you are not coeliac.
Going gf is a difficult transition, and I know that some people have a very intense emotional reaction to doing it. It affects your life considerably - work, social life, convenience.
My approach was to refuse to be at all negative about any of it, and immerse myself in finding out info about it (there's a good book by someone, surname Gazzola, that you can get on Amazon). The Coeliac UK website is also good, and this forum can be helpful.
The big plus is the improvement in health - my 6yo is a totally different child now, and that makes it all worthwhile. I can understand that it's easier for me to feel that way because it's my child that's affected, not me IYSWIM.
As a by-the-by - for the first 6 months of being gluten-free at home (and whenever out with the kids, so 99% of the time), I really craved 'proper' bread - on the rare occasion DH and I went out alone, we'd scoff a whole bread basket between us.
But after that, I lost my taste for it. I think there is an addictive quality to gluten, and once you break the habit your body loses the desire for it. I really don't care about having bread/pizza etc. any more, and if DH and I are out, I find myself generally choosing things that are naturally gluten-free (like meat/fish/vegetables etc.) Strange.
By the way, I expect you know this, but all your first degree relatives (parents, children, siblings) should have a coeliac test too, if you are diagnosed.