Yes I used my BTC just on trading. I always do altcoin trading and I Love it. That time I need online bitcoin and I used BTC. Most of the time i used BTC for bills at the hotel and if i buy some product and software form any web merchant. I also use my bitcoin on investment.
You can use bitcoin in various forms now,such as payment of bills, purchasing a new altcoin or trading it to the local FIAT and so.
Recently I had brought a IPhone 7 in Amazon with bitcoin as a payment. By seeing the today price, I was totally collapsed.Because I had lost many dollars as compared to today price.