Ofcourse it would be better to invest in a lower market price of it but due to doubts, some investors are hesitant, and it might be because they are afraid to lose. Doubts will never be separated with investments. People are only investing at this moment probably because they found a 'pattern' at this point that the price will continue and risk of losing is quite less. This is simply a misconception because there's no assurance that the movement will be consistent and continuous. Invest if you can, and if you're not sure, then don't because forcing yourself could result to regrets once expectations are not met.