Me personally ? ... No
I wish I did. At the very beginning I got Alpinia in the first or second month of the game - you know the first slice gacha that a huge number of people had good luck with, it was a 5 gems Yolo pull, and since then nothing.
Paid for the rest of the rainbows I have over the year. Some of the pruchases I do regret, some not.

Its kinda disheartening seeing people pull multiple rainbows in a single roll, and repeating similar success not so long after, when for me it has been a year and still not a single roll since. Statistic would dictate I should have by now pull at least one 6* (If we dont count the First Slice Gacha that is), but statistic doesnt go well with RnG I suppose.