It depends on the amount you have. If you just started buying Bitcoin and you have $100 in its equivalent in sats, it's okay to have it in Coinbase or another similar company. If instead you have 2,000 Bitcoins, as mentioned, to me what is crazy is to have them only in one place, as a single hardware wallet. In that case for me it is even OK to have a small percentage in a third party, like 300 Bitcoins, whether they give you interest or not, which is not as important as diversifying the risk of losing them or that an armed gang comes into your house and forces you to transfer them the Bitcoins you have in your hardware wallet.
Another option that I usually see for people who have large amounts is to have them in a multisig wallet, that way you can not transfer the Bitcoins to the criminals even if they force you because you need 2 signatures and at home you have only one.
So my distribution of 2,000 Bitcoins could be something like this:
-300 Bitcoins in a third party giving me interest.
-100 Bitcoins in a hardware wallet at home. I assume that if you have 2,000 Bitcoins you are going to have great security at home, and in the scenario that an armed gang breaks into you, losing 100 bitcoins is only 5% of what you have. Plus if they know you are a multi-millionaire and they can't steal anything from you, they can give you a pretty hard time. Better to give them 100 Bitcoins and let them go.
-100 bitcoins on a second home.
-1500 bitcoins in several multisig wallets.
How to store the seeds in this case for me would not be as important as diversifying the risk and not having all the Bitcoins in the same place.
On the other hand, I would like to qualify something:
And why handing out them, when it already generates you a decent passive income?
You are right about this, but some people still like to save to generate more income, the passive income generated thus far is far higher than the amount of annual profit return which can be given daily, weekly, biweekly or monthly, depending.
It is not worth it to sacrifice privacy for it, also yes the passive income is enough.
It generates a passive income in dollars if you consider the increasements in bitcoin price, but your bitcoin balance will be drained along the time if you don't invest your coins anyway.
Technically speaking, Bitcoin does not give you passive income, what it gives you is capital appreciation. Passive income is provided by a stock that pays dividends, but not by a stock like Tesla, even if the return in recent years has been extraordinary. In this case, Bitcoin's return is through appreciation, like Tesla's stock, although you have ways to get income with that appreciation, such as borrow against it or regularly sell small parts.