Finally, my purchase decisions are not affected by a few percent of inflation. I buy if I need or want something. Inflation is mostly an annoyance to me (saving is impossible in our current system).
You are contradicting yourself there. Because saving up in cash has been made impossible, as you say, you save less and buy more. The point is that people should save wealth in production, not in money.
Perhaps it seems that way but wealth can be stored in other means than cash. It does not neccessarily increase my consumption. Whether people 'save' in production should be a free choice to make, not a forced one.
The individual should store his wealth in the form most suitable for himself, which could be money that is not designed to loose value.
The society as a whole can not do that of course, because money is only exchange value based on reservation demand. But a society can also not save money in land, because the land is there, has always been there and will always be there. They don't make it anymore. If it increases in value generally, it is because it takes on exchange value and in effect becomes money.
The only way for the society to become rich, is to build up a massive production capacity through investment in capital goods. But building useless production capacity through companies yielding negative profit is counter productive, it consumes wealth. You need to build production capacity for valuable things, and you can only get that through voluntary trade and the hunger for profit. Any violent interference reduces the efficacy of the capital, and credit expansion and zero interest rate policy is the worst interference there is.