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?
They are rising because there is a limit on haw many transactions can be inserted in a block.
So in order to have yours there you have to pay more than the others.
And thus fees are rising.
If there would be less transactions there would be no demand for space so you could get away with 0 fees.
The higher the volume of transactions the more effort is required to process,
No it does not.