If mining reward drops down to .00015 next halving
Wrong. After next halving BTC's block reward will be 6.25/2 = 3.125 BTC
. it appears I can mine around .25 BTC in 5 years with a 141TH XP. Still profitable factoring in .075/KHW based on the projected BTC price.
You cannot predict difficulty adjustments, so it is pretty useless to try to calculate your futures potentials earnings with this timescale
Without interference, I believe BTC will climb to $ 150K in 2024 and $ 400-500K by 2028.
Wish you it will be like that, but no one will never know about BTC's future price