Now i would like a currency that looses some value over time to make wealth holders spend it on things that get profit and not sit on them. I Think currency shouldn't be a wealth storing medium.
Inflation benefits the people that have more wealth because it props up their assets, while it goes against the people that earn a wage (usually the middle class and the poor) because it devaluates their wages. The basic mistake you are making is believing the wealthy keep their wealth in currency. They dont.
You are advocating a policy that would go against the same people you claim to be defending. I dont know where all this is coming from and its not the same time I have heard this "theory". The ones promoting this theory and making people believe it are geniouses.