High volatility works best in trading than in investing because you can frequently buy and sell and make unlimited profits than if you are only hodling them for long term which can give you a lot of delays since the price can't really go up consistently. The bears and bulls on the other hand doesn't occur because btc is volatile but it occurs because this is how a financial market works. Stocks and other markets do also have this kind of phenomenon.
And the risk that comes with altcoin invest is huge. We've seen the biggest scam already, when you thought that your investment in this and that altcoin are going to be safe, suddenly it collapses or exit scam. As compare to bitcoin, it might not yield you good returns in the next bullrun, or at least the percentage growth like other altcoins, but investing in them will give your money to grow just by holding, it's like some stocks, the compounding interest alone is huge if you hold in long term.