100bitcoins and a well settled busness will be more than enough to get retired after 20years but i think 100bitcoin is little bit harder to achive in this time but you can try
It may be more than enough, but it depends on how the currency will rise in value over the years.
Depend on his need to wag money.so you can not say 100 bitcoin will be enough .if you looking to retire after 20 year than why not to invest 1 btc in trustable mining service which give you good profit.
Things and foremost theres no a trustable mining service even they exist for how many months now but the assurance that it would last forever isnt there. 100 bitcoin is a good amount if you looking to retire after 20 years. You could build a physical business with that amount and you can secure your future i guess.
I think now, even many people who have 100 BTC and they still have to work hard to be able to live comfortably in real life. I think especially in the future will be more expensive cost of living you need more than 100 BTC
100 bitcoins not a lot at the moment though i think that in the future it will be worth holding it
I now think the future means war, lol. We're approaching it, at least this is how it looks like.. 100BTC is not enough to live off maybe even for ten years. You never know when you need to spend thousands of dollars for an emergency. You need much more than that.