How interesting! I've had a similar experience.
Having been a very fussy child, as a young adult I carefully began to reintroduce myself to the foods that I didn't like/couldn't stand.
In my 20s I successfully introduced mushrooms, peppers, fried onion, garlic, steak and Chinese food.
Then followed further revelations as I discovered that I now liked cheese, avocado, sunflower seeds, mangetout, sweetcorn, leeks, cauliflower, spicy foods and olives.
More recently (within the last 10 years) I have discovered cabbage, pak choi, passion fruit, sweet potato, butternut squash, aubergine, chickpeas, lentils, halloumi, plain Greek yogurt (I used only to like the fruity types of yogurt), celeriac and probably a few others that I've forgotten!
So, I definitely agree that one's tastes change over time and it's always a good idea to try new things and to re-try things that you think you don't like but haven't tried for a few years.