For one thing, the government doesn't control the inflation of bitcoin like it does with dollars. The fed aims for ~2.5-3% "inflation" every year, however this is inflation beyond the massive deflation that occurs year over year due to technology and efficiency increases... The supercomputer that cost millions in 1970 dollars cost you a couple hundred (and fits in your pocket to boot.) The inflated 1970's million USD is gigantic in today's dollars, but only because of the inflation created by the fed because they believe it is the only way to keep the fiat money system working. If people realized the deflationary power by simply not spending, the consumer driven economy would crash and burn quickly.
What bitcoin offers is an escape from that inflationary cycle. If it's use spreads, it will allow people to protect their money in banks (although, they will be more like safety deposit boxes.) Banks can still offer loans, but it will be at a real rate in the market place. Fractional reserve banking will be a thing of the past. Federal (debt-backed) subsidies will no longer apply.
The inflationary spiral that keeps reducing wealth for anyone who wants to save without participating in the inflated stock market will end.
I see bitcoin as the cure to the woes of today. We have a real problem with the environment, and I believe much of it would be better if the money supply were not manipulated to support the consumer-driven economy. We would still have smart phones, but we probably wouldn't have throw away cases that we changed out with every outfit..