I'm just trying to build steempower, reputation and followers to the point where I can create a reasonable income from each of my posts (somewhere between $10 and $50). This will take a long time so in the meantime everything gets ploughed back into steempower. Generally if I get to the end of the day and I have plenty of voting power left I will use it up on self votes rather than let it sit at 100% which would be a waste of my voting power. Given that it all gets turned into steempower nobody loses out and many people gain from higher powered votes.