I like to use bitcoin like I use fiat currency to grow my money: trade indexes/ stocks/ commodities for profit.
Using an online broker that accepts bitcoins and pays out in bitcoins allows me to store my value in BTC vs. having to be exposed heavily to the US dollar with another online broker.
The best option I've found so far is 1broker.com (
https://1broker.com/m/r.php?i=4303)
It not only has a large option of stocks, currency pairs, indexes, and commodities to trade, but it has the cheapest and fairest leverage trading options, allowing up to 300 times leveraged trading on some currency pairs and as low as 0.000077% charges for overnight holding on leveraged positions (only charges for 260 days out of the 365 days per year).
It also allows you to trade bitcoin, against the dollar, at up to 5 times leverage.
And the best part is that I can make a deposit or withdrawal from the account and have money ready to trade or cash "in hand" in less than 40 minutes, with penny fees, vs. waiting three to five workdays for most online brokers that only accept fiat, unless one chooses to be penalized with $20+ fees by wiring the money. It makes it feel like I actually control what's going on with my money and I like that feeling.