Asset holders do not suffer the most from erosion by inflation; asset holders benefit from inflation (which is a devaluation of the currency) because the price of their assets increases. It is those whose wealth is mostly in cash that suffer the most.

Keeping interest rates low keeps inflation high. Raising interest rates reduces inflation but also hurts asset prices and can potentially bankrupt some heavily indebted businesses. This is the balancing act the central banks have been trying to perform. The reality is that getting it wrong in either direction hurts the lower class: excessively high interest rates lead to high unemployment; excessively low interest rates lead to high inflation.