I understand what you meant by that buying a coin and it will drop value, I'm into the same position too but I don't feel bad about it because my intention was for a long run and not for short period.
So I will suggest you remove emotion and hold on the coin for a long period, that is the only time you will see profit coming from it.
Just take it as investment but I think you have to be careful when buying a coin. First check the market chart of the coin and also no the influence moving the price.