I'm not a fussy eater, if I'm invited somewhere I'll make a good fist of anything I'm offered.
I've never been particularly keen on fish (or cherry tomatoes for some reason, you can't beat a proper 'un) , but I'd have it if it was the only choice on the menu.
I think as I've got older, I've developed more blander tastes, eat less than I used to, try to follow medico-dietary constraints (no grapefruit, as Di pointed out) and certainly become more vegetarian based than a meat-eater.
I do have to watch indigestion a bit these days, though ..... so like Gal, I'd try to avoid any meal that was predominantly spicy.
And like jenni and Saundra, I do prefer red meat properly cooked. I always ask for "well done" in a restaurant, and if the chef decides to burn it to a frazzle, that's fine by me!
