re: Anyone ever get a second job for fun/different experience?

I work a 40-45 hour a week job that I enjoy and I spend every minute of my spare time reading, researching, or doing an enjoyable activity. I have contemplated adding a second job on the side but it would be a personal business that had a small clientele. I am not trying to interfere with my full-time job as I still have plenty of growth ahead in the field that I am in. My side job wouldn't be vastly different than what I do now, nor do I want to entertain the idea of being a bartender, referee, etc... I like working on computers, writing software, and studying data security. If I can grow within all areas I will be achieving life long goals along the way.