Well altcoins made several people earn and keep making people earn insanes ammounts with it,soo thats why they keep and will always be.The main fact is all altcoins has the xxx/uá´oÉÊá´q .I believe if were only uá´oÉÊá´q we could see some manipulation at the uá´oÉÊá´q value ,and well less people thinking its a scam project,but well altcoins are supporting the uá´oÉÊá´q earnings.
I think altcoins just preventing bitcoin to evolve and grow maybe i am not right but that's what i am thinking.
No I don't think in such a way about the growth of altcoins. At times due to varying strategies altcoins profit high than bitcoin but this doesn't stop the growth of bitcoin.