I think Bitcoin will be success in the future also, bit the buying process of Bitcoins have to be made much more simpler than it is at present. All indications point that the process will get more streamlined, so buying bitcoins will be an easy task. 
By looking at the current situation with bitcoin I agree with your points. I agree that in the future it will be at a much higher value and along with value people will also prefer it at a high scale and it will be a major currency which will be used for most of the national and international businesses.