Just because mining is not profitable now doesn't mean it won't be in the future.
Or it may never be again, who knows. Point being is that you may not like xxcsu's delivery but he/she isn't far from the truth there. I'm still mining Eth but it costs me more to mine it that I make right now.
If, as I base my strategy on, Eth prices recover then all that mining I did under water will suddenly be profitable.
It's an investment. It may not work out but I'm not pegging my mining yes/no decisions on the current market but rather on the market I expect there to be in the future.
Which GPU do you use and how many? Your rig is with good setup? GPUs are properly overclocked?
They are setup about as well as can be expected, overclocked for good performance but not so much so that I have frequent crashes. I've got a mix of NVidia and AMD on a few machines, running windows, pretty stable overall.
It's just that the crash of the Eth price has put the cost of getting each 0.11 Eth right at that line of energy costs. And that's after having shopped for the best energy prices available in my region. Like I said, I can run this way with no worry as long as price recovers in the mid term. If not then I'll just write off the costs as a bad investment.
So I think for newbies they absolutely need to pay attention to the total costs of running rigs and weigh if that is worth their time vs. just investing directly in Eth or whatever coins they like via fiat. I would say a good rule of thumb is to expect about 80% of the performance advertised by those mining calculator websites, due to downtime, reboots, messing with the setups/overclocking, invalid/rejected shares, your service provider having bad connection speeds from time to time, etc. Then use that number and add up the cost of your equipment, the cost of energy, and how much time you are willing/able to devote to learning and maintaining.
There are definitely fewer people mining these days, you can see that just from the GPU's that have flooded the market at a fraction of the cost they would have been a year ago. If Eth recovers all those GPU's will disappear and rise in price again though.
It's a calculated risk, and that's why it's really up to each person to weigh their own tolerance and situation.