The history will repeat itself, these pharase will alwasy be a banchmark for most investor. Like this topic, a speculator just easily use the price history to predict bitcoin price in the future and yeah the most fundamental is halving event.

It could be different in each halving event, like right now bitcoin just slumped down first due to corona virus attack. I don't know if later when the halving event come back the problem that will be faced. And one thing that I just worried is a regulation of each country.

That thing will always be a problem for bitcoin's price movement. Its price could reach to lower price below $100 if most country easpecially developed country ban bitcoin in any way. The user will always be afraid for that reason and it could make a reason to stay away to using bitcoin, it is just my opinion.