The first ting to Profit from Bitcoins you would Need to own them. Even if you don't want to trade/loan/invest or gamble with Bitcoins it still makes sense to just hold them in your wallet and wait for rising values.

You can look at Bitcoins as at any other currency. They don't earn interest for you or any other Profit. If you just Keep the Money in the bank the only profit you can earn is from converting it at a higher price back to your original currency.

If you have Money to invest I would definitely put a small part into Bitcoins, just for the diversification.