No doubt eth is a good investment for long period however even there's a correction currently, the price is still expensive compared to the price of it before. But if the price is not an issue for the investor then you can always buy at anytime especially if you're planning to hold it for long term. Even its an establish coin dont go all in, diversify your investment since many alts are in dip at the moment.

Anyway this is a 3 years old thread, so those who buy eth at early times made a good decision if they still hold their eth up to now.