Usually they recommend you to diversify your investment, so you avoid losses.
But as a real approach, having $1.5k, would you invest in how many cryptocurrencies ?
What if I invest little by little, only in Bitcoin, would that work as well ?
If you want to have an assurance, then you ought to invest in bitcoin as it is the most trusted coin out there. It is better to invest on it all in if ever you see a great opportunity like a lower price rather than slowly putting money to it waiting for a much lower price. You never know how the price will go so there is a chance that you might wait a while if the price recovered and increases for a long time.
I agree, hitcoin is very assured coin than the other though their are different characteristics of coin in the marketplace and it has its own value but we do not have to be worry because we can check all along as we are knowledgable bout it. Investing in bitcoin, their is an assurance.