* The documentation was better than Rails * Python is more useful outside of Django than Ruby is outside of Rails * The Python syntax seemed easier to read
Since then, I've become a big fan of Django and Python. With that said, plenty of smart people are using Rails. I agree with some of the other commenters that you should do the tutorial for each framework before deciding.
As for jobs, both Rails and Django have tons of open positions available and hot startups using them.