I guess just by buying bitcoin will not guarantee you'll be wealthy. but maybe when you're using bitcoin that you have to play a trade, and use bitcoin large in the trade, chances are you can get a greater profit, and make you richer quicker
Bitcoin is protected against inflation. That means that you don't actually need to do investment, if you want to preserve the purchasing power (unlike the case with fiat currency). It is more similar to bullion metals such as gold and platinum. That said, there is nothing wrong in trading. But make sure that the exchange is reliable and your coins are safe.