Personally I'm a big fan of Bitcoin's volatility. There are good places to profit with volatility. Trading in the vast majority of standard stocks are not even close to as interesting.
Bitcoin is also open to manipulation, sure. But the manipulation is open to every one

For many established securities and traditional investments only the banks and other big players can manipulate it. Bitcoin offers manipulation to the masses haha

.
Besides, the chaos is fun.
I've bought bitcoin as low as $10 a coin and sold as high as a $1000. And all in just a very few years. That's amazing. That's chaos, but I like it.
And after I have, on many occasions, made a successful trade for 10% more coins in the space of week (or even a day) it just makes me laugh to consider most people in North America invest in vehicles that pay them 5% a YEAR. Like what a joke, 5% a year is just around the level of inflation.
The risk is greater, the potential for loss or reward is greater. I'd take this any day over a typical mutual fund.
In short, bring on the chaos. It's really quite something. It's as interesting because we are still very much in the early stages; the wild west.