No wait for BTC $20K+ rally -> ETH will dump and you will buy much cheaper!
Wait a little more, eth may dump but don't be scared because it will bounce back and make good money for you. Though people say negative things about eth I am still confident that this coin can make our future bright.
I think to invest in Ethereum is still fine. because for Ethereum itself that continues to experience this development will be so expensive when investing. with the possibility of its growing development makes this coin very reliable to the future. therefore I consider that this coin quite interesting and become my flagship coins for now and future as an investment.