asics cannot be used. it was made inefficient in the last fork in order to keep mining decentralized
1st question : https://www.coinwarz.com/mining/bitcoin/calculator
2nd question: best is p2p pool mining if you have 1 asic
Discussion
ASICS are still in used
you need to understand what asics are:
it stands for application specific integrated circuit
all asics are made in china
meaning that asics can only mine bitcoin, nothing else
what is the implication:
normal computers, cpus, gpus,android cannot mine bitcoin
as a consequence bitcoin is getting very centralized
in huge data centers, more and more centralized
the government corporations know where those datacenters are and could easily blackmail them into 'compliance" with whatever they want
monero cannot be mined with asics
monero cannot be tracked or traced. it can only be if you allow it. providing perfect privacy.
monero is a community project being mined on any computer, becoming more and more decentralized.
monero cannot be blackmailed or shut down by anyone