This is the key argument for people promoting Bitcoin: Look how where we were a few months ago and look where we are now. It is only going faster - you should join.
This means that these people have jumped out of an airplane with no parachute.
They are now halfway down and are telling their friends: Look how well this is working, and it is going faster and faster.
When you tell the people they are going to crash-land, they just tell you it is FUD and that in their experience things have been going great since they jumped out of the airplane.
But remember, the speed your taking higher, it doubles when you are going lower, we are not certain how bitcoin will go high, it might dump after an hour it may pump after a minute and bitcoin being unpredictable as an asset is a risk for people, and people nowadays do not want risks, they always want it the easy way.
But it is amazing how the price is quickly changing and it is really making a good price, if this continues I think many more will be buying this coin despite of it's price.