Assuming this is accurate on the total network hashing power...
https://btc.com/stats/diffOn 1/10/2017 it was 2.41 Eh/s
On 1/13/2018 it was 15.95 Eh/s (562% gain)
On 1/24/2018 it was 18.63 Eh/s (17% gain in 11 days)
So my question being that I'm concerned how quickly my 40.5 Th/s will even be worth running. As pools grow profits are spread thinner and difficulty rises. Maybe someone who's been doing this longer than me could offer some insight? Truly just looking for some feedback but these numbers kind of startled me.
Edit: I'm not panicking, just looking for solid experience from those who've been doing this a lot longer than I have. I'm still pretty new to this (11/2017).
As long as ASIC mfg's keep pumping out new miners, this will keep happening. They have turned it into an arms race and you have to keep buying more to keep pace.
Alarmists have been sounding the death knell for mining and about how unprofitable mining is and will be every time a new generation of miner comes out. They keep using the same argument that you're better off to buy and hodl BTC instead of purchasing new miners. Somehow, miraculously, BTC has managed to keep pace in through increased interest and rising prices. Somehow us miners are still churning out a profit, though you have to keep adding to your hashrate if you want to keep pace.