Because it is at the reduced rate like this that you can buy and make profit by selling when it rises. Or do you prefer to buy when it reaches it's al time high where you probably can't purchase it. This is the perfect time to invest into bitcoin and wait for its bull run hopefully ending of this year.
Yeah, you are right! with this low price we can buy bitcoin now and invest, I'm sure that we will make a good profit in the future, because it will rise as well as other crypto. For now we just need some patience.