Transactions are about 10 minutes because that is the average block time, but you want at least 6 confirmations (blocks) too pass to really solidify things. So, it is more like 60 minutes. It is this reason (and volatility of course) that people dislike bitcoin as a regular payment mechanism. Nobody is going to wait 60 minutes at the counter to buy something.
But, if you have 1 trillion USD of value (insert the actual value that is meaningful to you) that you want to transfer around the world, you certainly want to do it in the most secure way possible. Especially without having to get permission from your local bureaucrat first. Bitcoin certainly makes that possible. The problem being that buying up 1 trillion USD worth of bitcoin is going to obviously move the market and anyone holding enough to do that OTC, makes it pretty centralized.
I do feel like there is a middle ground here and that is to look at it as more of a store of value. Just buy and hold it in the same way that people hold onto gold. If you look at the 100yr charts for gold, they are all over the place. 2008 was one of the largest dips that set things back at least 30 years! Now things have bounced back... but it is all on speculation and really has nothing to do with some sort of 'intrinsic value' of gold.
But, if you have 1 trillion USD of value (insert the actual value that is meaningful to you) that you want to transfer around the world, you certainly want to do it in the most secure way possible. Especially without having to get permission from your local bureaucrat first. Bitcoin certainly makes that possible. The problem being that buying up 1 trillion USD worth of bitcoin is going to obviously move the market and anyone holding enough to do that OTC, makes it pretty centralized.
I do feel like there is a middle ground here and that is to look at it as more of a store of value. Just buy and hold it in the same way that people hold onto gold. If you look at the 100yr charts for gold, they are all over the place. 2008 was one of the largest dips that set things back at least 30 years! Now things have bounced back... but it is all on speculation and really has nothing to do with some sort of 'intrinsic value' of gold.