A big time miner with really owns a lots of mining rigs and owns a property for mining is the only bitcoin job I see that can be taken by full time. But you really need a big capital here to ride the current wave of mining difficiculty.
In trading or any other method, don't need to sit 24 hours just to do this so take this bitcoin job only as a part time.
You are right, you need to have a big capital for starting it since 1 mining rig isn't enough for it, so you will need to buy a lot of mining rigs maybe 4-10 mining rig will suffice your daily income for being a full time bitcoin miner.
even if you have enough capital to build yourself a decent mining rig, you first need to earn back your money which already is a very though job as the difficulty keeps increasing. by the time you have earned back around 50-75% of your money, it will not be profitable to continue mining with the same rig.
That's right, and when the halving comes, even I'm not a bitcoin expert, depending on the speculations of bitcoin enthusiast.
Miners will be having to get hard time for mining because of the incoming halving.
Why to have hard times? I think mining is like any other investment, just it requires more money. Usually more money means more risk, but smart miners started first to collect earnings from btc, early miners are very rich now.
So I'm sure they will find a way to still do it. Nothing is easy for anyone here, trading, gambling, mining... everything has a price, and difficulty level.
I think its possible for someone to make serious money with btc and to quit daily job cause of that.