I do trading for a long time (not with bitcoin,mainly at forex) but i do trading with bitcoin for about 4-5 months already.
I cannot consider it for myself that it is like " a job " for me,because i think that a job gives you maybe not the same profit every month,but it is actually stable.
I cannot think that im such a successful trader,that i can get 100% guaranteed profit every day,to treat it like a job.
Maybe im wrong,or maybe you are very good at trading,i dont know that.
However,spending your time into something useful is also an "investment" but without depositing money,only time right?