I enjoy the various markets. There's something rather elegant and appealing about the way prices move.
I'm pretty obsessive about checking the market most days and seeing how my net worth is varying, despite being much more of an investor looking for long-term capital growth and an annual income than an active trader looking for high turnover. Still, I do enjoy keeping track of everything. It wasn't so much fun during the worst of the crashes over the past year or so; the daily paper losses were quite something at one point!
Still, it's turned around nicely now, and in terms of capital growth I'm happy with the overall trajectory at the moment.
I did use to trade more actively at one point, with a bit of a "slush fund" I used for this "playtime". I got bored eventually (I probably about broke even or very slim profit overall overall, after correcting for inflation and opportunity cost, on this fun trading), and sunk the money from that into a second property. That's generating a reasonable yield itself for now; I'll look at that in a decade or so and decide whether to sell up or keep the property.
My market investments nowadays are in the hands of wealth managers and to be honest, I now prefer it that way. They simply have more TIME than I do to monitor everything and they balance the overall investment portfolio more finely.