Actually, I have not felled any interest in mining because I am very impressed with trading so almost a lot of time I have been spent in trading.
If you're good at trading, you have to keep doing what you have started there. Because you know how to trade, you can make a lot from it and just as the same as in mining, they're also profitable.
If you have good quality skills in mining then you can do it.
Well, building a rig is one skill but after that, you just let your rig mine the coins for you.