I've only been punting seriously for 12 months Kenchar and at the moment I'm punting as a (minor) supplement my puny living as a programmer which only occupies me about 1 day a week. I'm slowly building successful systems so the income side of it is improving. I'm thinking of the punt more as a form of untaxed superannuation really (haven't got any real super), started off with a wedge and am just trying to build it up without removing any if you get my drift.
I don't need to punt so I guess the short answer is for the fun of it.

KV