Yeah, just as IPT said, if one wants, one can be a beginner of a new tea on any day, because there are so many teas
Some most expert type of people I know grew up in this way - they were not allowed to eat any spicy food, no perfume, nothing to eat or apply on themselves with strong smell. At a young age, they drank the same tea of the same low grade day after day before getting the taste of another tea or a higher grade. It's said that most people can only distinguish "better" and "not as good" tea by tasting, but these experts can precisely point out various aspects of good tastes and bad tastes of a tea and distinguish two teas of very similar grades.
Somehow all their experience in gaining expertise sounds no fun and too much work for me
But very possibly it's because I am not at their level to enjoy their fun. There is no way to compare. If you think you are having the most fun, then you are.