My husband's uncle makes this every year. Every year I try it. Every year I still don't like it. One year the uncle wasn't there, but there was still a green bean casserole. That one was wonderful. I went back for seconds. My sister-in-law had made it. Turns out she found a mix in a box and had used that.
Green bean casserole ("GBC") is a favorite of mine ... but only twice a year, no more.
I've gotten cravings for it at other times of the year other than holidays and when I made it, it just wasn't the same as anticipating it at Thanksgiving or Christmas, then eating it along with the turkey, dressing and other fixings.
I'm also picky about mine, so try to always make at least one casserole dish of mine to take along.
I *have to have* those canned green beans that are "French-style seasoned" and no other kind. None of those bright green ones or even whole Blue Lake ones that I *do* like in other dishes. The latter are wonderful in a marinade of vinegar, sour cream, onion slices and dill seed. But I don't want them in my GBC.
I also like to make mine with Cream of Chicken soup rather than Cream of Mushroom. And I put as many of those canned French's onion rings in it as I put on it. Also have to have a little bit of soy sauce and chopped water chestnuts in it and some cheese on top.