i think Bitcoin is only profitable if done at large scales. you must get expensive mining equipment and of course it consumes a lot of electricity monthly. Also its usually much more cost effective to buy Bitcoins with this money instead of using it to buy mining equipment.
You will know whether you are miner or a trader when you have try to do both of them. But to most of us, we are traders since mining came a little bit difficult for me to understand. But then if you are adventurous and knowledge-seeking, why not try mining if you have time and capital. You wouldn't know if its for you until you try to do it. In bitcoin, whatever you do, you are important because you are part of the community and you contribute to the welfare and growth of bitcoin.