Log graphs are pretty misleading, which was my point. Not trolling at all, though I am laughing at your grasp of Economics.
They're not misleading when you're talking about exponential growth. Constant growth is exponential growth.
I recommend that you watch
The greatest shortcoming of the human race is our inability to understand the exponential function.
Sure, 2-3% is probably the ideal inflation level, and we're usually a little higher than that, but around 4% and lower like we've been seeing is pretty damn good. A low steady rate of investment encourages investment and lending and is overall good for the economy.
Why is 2-3% ideal? 3% inflation per year means that every 23 years the supply of money doubles. Is that beneficial?
Why should investment be encouraged? I don't think people should have to play stock broker in order to save money. That sort of system benefits those who can afford to lose money at the expense of those who cannot.