indeed. The low transaction fee's are a lie now. better to buy your pizza with real money or pay more with BTC.
Can anyone tell me for whom those fee's are, and why they are rising?
The fees are being paid to miners to process transactions. The higher the volume of transactions the more effort is required to process, minres are motivated to process transactions that carry a higher fee first. This triggers a cascading effect, if a user what a transaction to be processed sooner he has to pay more.
In the traditional processing model, processing fees go down with volume. Users and acquirers work with a predictable pricing structure. Acquirers compete with each other driving making fees more competitive for merchants. Bitcoin turned this upside down and made users compete with each other. I believe this is not sustainable.
Exactly its because miners also need to earn porfit on their job. The higher the fee that you have paid the fastest its transaction will be. So if you paid for a low transaction fee then it may take long time or even day before it process.