Why investing in derivatives might be your thing?

You could make a profit no matter in what direction the market moves

You could invest with less capital then you would need on the spot market

You could make a lot of profit (by using leverage)

With a derivative you could protect yourself against price losses

In case of options you can only exercise them if they generate you a profit.

In the case of options or futures, the futures exchange is your trade partner and guarantees the trade.

You could invest in the whole market with just one investment (eg. index future)