Inflation is one of the cause of financial depression but it is just one of the cause. Also a country with good economy will have people with financial depression. Everybody can not be rich and you can not know what everyone on earth are going through emotionally.
Did you read about the happiest countries in the world and the most depressed countries in the world. UK is in number 2 of the most depressed country but the inflation in the UK is far less than some countries in the happiest country in the world.
Also know that bitcoin can not solve inflation, financial depression and depression generally. Not everyone can also afford bitcoin. Some people will buy it but not much in a way that can make them to be come very rich.
When inflation is introduced into a country, it goes on to ignite economic growth issues and general life depressions. It goes to change the way people are living and their financial decisions. For someone who has lived in a country that has suffered inflation recently, I will characterise it as terrible because the most tricky part of it is, you can't help the situation but to adapt in such harsh economic conditions.
When inflation sets it, prices of commodities begin to skyrocket including other trade market items like building materials and so on which makes an average cost of living more expensive, yet your financial muscles remain the same when the value of your currency depreciates.
For instance, you have a 9-5 job that's paying you $500 dollars monthly and you take your monthly expenses from there (including your accommodations, feeding, transportation, etc) to the tune of 300 dollars then left with 200 dollars for savings. When there's inflation, the cost of your expenses can rise by 100% or more whereas you will still be paid the same $500 dollars monthly but you may end up running to debts to be able to sustain yourself after buying the same commodities for your upkeep.