Same here, usually XRP and doge for transaction. Bitcoin price is a big factor when it comes to my gameplay. Though I seldom play, but when it does I check the conversion rates first. Same here, that spending bitcoin looks expensive especially when price is mooning.
As you said Altcoins like XRP is really helpful when the price of BTC is rising and the current price of XRP doesn't give us some hard time to transact with it. unlike bitcoin and sometimes ETH does have some high transaction fees. When you spend them like spending on transaction fees the payment doesn't make any sense at all. since you have so many options like converting it to XRP before sending it to your own wallet, you can discount a decent amount of money.