Easy to reading the past, but no one knows what will happen in the future, even just for next 3 months we do not know if bitcoin value is higher than today. For me, motivation invest in bitcoin is longterm.
Many people think they are good traders just because they can see that in chart of the previous months they can tell where it was a good moment to invest, but anyone can do that, the most difficult part of being a trader is to take instantaneous decisions when it counts when things are not as clear and if you do not take a fast decision you may lose hundreds of dollars, that is what separates good traders from the bad traders.