Alter Wrote: BTC seems to be very profitable, but over the years i've seen a decline in gross profit from my rig, replacement costs are getting through the roof, anyone else having this issue!?
BTC is actually a very fragile market to even play with, even if you try to consider your profits when having any BTC in your account, nowadays you see other crypto's that have lower market value butt stronger resistance between getting their values rigged, so I would suggest you mine something else, if you are mining BTC on any rigs.
A suggestion will be that you exchange your BTC and change it to other crypto's that have a potential to rise up near 2019, predictions if you read articles.