The price of bitcoin changes too much. I buy one bitcoin and the next day, the price drops 5%. It is not good for me.
It all depends on how you use Bitcoin.
If you just buy and hold your coins for a certain period of time, then nothing happens if the value drops a bit. Just make sure you don't sell. As long as you don't sell, you won't lose anything.
If you buy and plan to send a certain amount the next day to some one, or to buy something, then yes, it's not nice to see the value go down a bit.