While Bitcoin there are a few scaling options, it appears that a number of Bitcoin investors have been switching to Altcoins, and may not switch back to Bitcoins any time soon .
What will happen if investors continuously switch to altcoins? Will bitcoin crash ?
Most people including myself keep a combination of the two and I don't foresee a complete switch away from bitcoin, remember it is still the reserve currency used by exchanges with which to buy and sell altcoins. If anything the popularity of altcoins has increased the demand for bitcoin.