Charlie, first of all YES grain free forever!!
My thoughts are that once you continue to educate yourself there is so much truth in the health benefits of being grain free that it is an easy choice to make for the long term.
The absolute hardest part is with our society being so focused on grains they're hidden everywhere and even when you're dilligently trying to be careful you can be accidentally contaminated. The longer you're grain free the more strongly you react to this contamination, in my experience anyway, that has been the most difficult. Other than that I am feeling great (grain, dairy, soy, and sugar free over a year now).