Depending on your age, the size of your family, inflation, the country you live in and, of course, without knowing what the btc will worth in 10, 20 or 30 years, how many btc do you estimate you'll need to secure your retirement without the help of the state, private insurance or your family?
Whatever figure you would name now, when you retire, this amount will always be insufficient (even taking into account the rise in the cost of bitcoin).

Because human nature is such that any money is not enough.
In fact, your question is incorrectly asked, because the cost of bitcoin is important, since any material (and not only) goods are bought for money (dollars or national currencies - all payments are made in it), and not for it.
Do you think this is an achievable goal?
I indicated 10
BTC in the poll so as not to be greedy and so that other voters would have some left.

But I think that this goal is almost unachievable (for the majority), especially when with each cycle bitcoin becomes more and more expensive.
I'd like to have 10, but I know that's impossible, even if I have no idea what the btc will be in 10 or 20 years.
Why? What if in 10 years bitcoin will cost $100? Then everything is possible.

You can also become a rock star or a movie actor, for whom 10
BTC (1 mln.$) is a
small amount.