Last time I looked, about 6 months ago, Raspbian didn't get timely security updates, and the only low-maintenance distros that supported RPi & had their patching act together seemed to be Ubuntu & SuSe. Debian doesn't support the RPi.

Even if you put the RPi on your network "just for fun", it can cause much havoc when someone pwns it and joins it to a botnet or uses it as a stepping stone into your home network.

Is there an alternative, more active distro worthwhile looking into? Alternatively, you can install Windows on the Pi to get updates ;)

Ubuntu or SuSe. Or Arch like another comment said, if you don't mind setting up everything yourself.

I think Arch Linux will do the job.