Of course, they will crash every couple months or so, and it is a wonderful thing.
It is healthy for the market and indicates price correction.

On top of that, you can get more alts at lower prices.
Then, when the inevitable pump comes, you can sell them off for profit.
Or, you can choose good projects to hold long term.

I know it is disheartening to see your portfolio lose it's value, but look at it long term.
Look at monero, for example, last time alts crashed monero was down to 80 - 90 dollars.
Look where it is at now.
The market had a very slight price correction recently and the price of monero dropped but in the long run their is substantial growth.