I have food allergies and there are foods that I have had to give up. One in particular is cottonseed oil and some fruits (so no fruit pectins which are used as sweetners and stabilizers) among other things, that seem to be in everything and finding foods without it is very difficult. Then there is trying to find replacement products for them and altering tastes in the process as I try to adjust to the new things. As you said though, there's no choice in this case.
I know from family and friends that are trying to manage it, what a challenge celiac's can be. There are more alternatives than there used to be but the tastes are not the same, it is an adjustment. My diet includes a lot of the same foods as the celiac diet for some time now. Some things I have not adjusted to but some things I now love.