We can expect Bitcoin to reach $80K if the ETF is approved. Gold had a bubble and crash at around 1980, which looks similar to Bitcoin's 2017/2018 crash. However, after gold's crash of 1980, the price had an increase of 300% from the ATH in 1980. Applying this logic to Bitcoin, we can expect an increase to about $80K if we take its current ATH of just under $20K into account. I would not hold any altcoins if this is to occur as their value in Bitcoin will probably crash.