Well, I managed as well some hardware and in the long run, they paid themselves. I started to mine with FPGA and then with asicminers. I mined in total, 23 BTCs. Then I stopped and kept the BTCs, (sold some), sold my hardware via ebay (which helped to return almost all my investment). I then got the BTCs doubled when bitcoin cash was created, which I sold well enough too. So when I read this whole "it doesn't worth to mine, etc", i think that is relative. It worked well, even for me, running it in Germany.