I personally left mining out simply because it is only really viable during a bull run. I tried cloud mining and I also check the mining efficiency and found out, that this has not really been a good idea for a while now.
If it is such an occasional income, which in worst case keeps mining only dust because it is cheaper to save the electricity and invest the money directly into the coins, while having an insane competition AND a lot of trouble in technical terms, if you consider mining with your own hardware. having the choice for a contract which robs you any flexibility is not a trustful investment option for me either.
Any way you take it, scaling profits is only easy with cloud mining, if the contract makes profits. Doing it with hardware yourself takes true dedication and creates a lot more problems to take care of. Heat, noise, theft, heat, electricity bill (look at german prices, you will understand...), maintenance of hard- & software and did I mention heat? Like 80 °C per GPU? 24/7?
Since cloud mining is not flexible, you can not even change the coin you mine and you have to pay some well earning people, I can not see it being a way for me to take a risk and invest.
The real advantage of having your own mining power which you can flexibly use is pre mining coins before they hit the market and selling on the first pump. There is no cloud mining company except nice hash (which was not making any profits forever) where you possibly could use your investment on arising opportunities - rather it is locked and useless in worst case doing no profits at all.
Having your own farm is only viable in countries with extremely cheap electricity and cold weather. Germany as an example is completely useless to set up your mining rig, because poland is 3x cheaper on electricity and right next to it.
From my life experience flexibility means survival. It also means mobility, the possibility to act to changing conditions. Simply buying an altcoin or selling it again is a way lower hassle than the mining business.
I believe we all are looking for less stressful ways of income. This is the reason why I left out mining from my strategy. It was located in the draft in area 2, but i deleted it.
Thank you for your advice, blindminer!
Maybe you can prove me wrong with some numbers, though I would accept the philosophical and moral aspect of supporting the network by dedicating a part of your investment into the process of mining.
At the other hand why increase the difficulty by investing even more into mining? It consumes so much energy already, that I believe it is not viable at all to stay with the proof of work concept, since BTC needs more power than Denmark already!
If I am honest, this issue is also starting to affect my choice of coins I am looking at to put my money in, the ideas I personally love to support.