Yes, bitcoin volatility is a bad thing and also a good thing. It is bad because the price is doesnt fix (maybe low and sometimes high). It is a good thing for the investors because while the price is low it is a big opportunity to buy some coins.
I think bitcoin volatility is not bad because we can find a lower price to buy bitcoin and then we can sell if the price increase again. it also good for the investor like us if we can buy at lower price. but if we don't like the volatility, we don't have to buy bitcoin because the volatility will always happen in cryptocurrency no matter we like or not like. so I think with the volatility, the price for bitcoin and altcoin can go increase higher and will down to making a correction so finally, the price could go up higher again.