For trading, I will choose BTC and this will always be my top priority. I have little to no faith in altcoins. They just show you promise and then can't deliver much. It's a different story with reputable alternative coins but hard to trust those new ones. Bitcoin being the oldest one and most reputable, gives me more confidence and having the privilege to work with more data also gives me an advantage in this field.

Trading with other coins? No! But investing? Yes! Bull run will start soon so better to diversify my investment portfolio with altcoin than to trade them.