Inflation and deflation are 2 sides of the same coin. Both are bad for participants in the economy, through no fault of their own. Either way, some sectors of the economy benefit unfairly and some suffer unfairly. You can't say that deflation is good and inflation is bad. It doesn't work like that. They're both bad
No, deflation is flat out damaging for the economy (Great Depression as an obvious example). The same is not true for inflation
The changing itself of the value of money up or down as the change works its way unevenly through the economy is what hurts people. Both inflation and deflation change the value of money.
Not quite so. The changing value of money may hurt some people, it may even hurt the majority of people, but at the same time it may be healthy for the economy as a whole, being a lesser evil. Actually it all depends