I am at least glad to see it doesn't appear to be heading for an increase again! 

However, since I have added power this round that confirms that that at lease that many people have quit, whatever their reason.  I will probably mine even if it does become unprofitable in the same way I used to crunch numbers for BOINC projects, however, if I am not making money at it, I won't be breaking my neck to get miners back on when they crash or have a power loss!