This is the problem people have. They will not not want to buy when the price is low but later want to buy when the price is high. The safest coin to buy right now is bitcoin. If you buy it, it is better not to be checking your wallet balance in dollars. Just leave the coin and be expecting bitcoin to get to $100000. Because the price is falling, some people will panic and sell just like what happened yesterday. Do not do that. Do not sell if you buy even now.
I think this is just a natural phenomenon that is common amongst humans, nobody appreciates anything unless it has great value and same can be applied to Bitcoin, everybody wants to buy only when the value has appreciated but for me I do not think it is a pretty smart move to buy the Bitcoin only when it appreciates but would also buy when the price is also low too because you can't really predict when the price may start going up