Yeah, for me its just a hobby, and in fact I am trying to see if there are market inefficiencies in betting lines, and also political sentiment. My rule is that if I'm really that good, my betting accounts will grow over time and then I'd just increase my bets proportionally, and if my accounts drain down, so be it, in that case consider it a fun hobby. Right now I'm more or less treading water, and yes if I was consistently losing I'd unplug the experiment, or just bet on paper. I find it helps keep my mind sharp, to assess team records, trends, probabilities etc.