Hello,
which factros does really affect the ETH difficulty?
Is it only the number of miners / total hashrate?
Does also the ETH price affect the difficulty?
If difficulty increases, does that mean also, that I reach less MH/s if this was for example 30 MH/s until now? Or will the MH/s stay the same?
Is it possible and realistic that difficulty decreases? When would that happen?
To answer the original question here:
Difficulty does not impact your individual hash rate. Difficulty affects productivity of a given hash rate. More difficulty will slow down the Ether (or any other coin) production of the network.
Value of the currency is tied to supply and demand only and has nothing to do with difficulty or hash rate.