Interesting to hear, pretty much the same as me, that 50% keep in Hive is a golden ratio, I think. And it is a longer term thing, as in I'm thinking at least 5 years and often longer... 10, 20 down the line!
Compounding is a beautiful thing, for sure!
Let's say that my time frame is at least 10 years, when I started this was the time frame I had given myself... 2 have passed so there are 8 to go even if then when the time comes I will reevaluate the situation a bit.
In 8 years all in all I will still be young enough to be able to grant myself another 5/10 years of waiting, eh eh!
Let's say that 50% is the perfect percentage in my opinion, considering however that I invest the other 50 in other projects always in the Hive ecosystem; if there were no interesting secondary projects and that I believe can give me something back I would leave 100% in Hive.