I’ve been trading futures professionally for 10 years as well. I trade energy and natural gas. I pretty much stick to those markets because I don’t have the time to put into other market and they provide a great living for me.
I trade er2, e-mini russell. You are correct, I rarely look at anything else.
I traded stocks for about 5 yrs and once I found es and er2 it was all over. I can actually concentrate on one thing and make a good living without being nuts! lol