I agree with your opinion, that it is still not too late to buy ethereum. However ethereum is one of the coins that has great potential for long-term investment.
You can deal both short and long with this coin, you can go and ride with the current pumped just to make sure to quit before
the party ends and enjoy your short profit. Or, you can buy and hold then wait until you achieved your target.
By investing now, who knows we can see ethereum's glory at the end of 2017 yesterday and now we can get a profit of 3 to 4 times what we invest. hopefully
Precisely, if you have that kind of faith then why not go and invest your money, this market always brings surprises.