Would you really be willing to give up the productivity benefits and developer happiness over a few mishaps? Also, it's generally a good idea not to upgrade to the next software version until seeing the repercussions its had.
That's the thing! I find myself ping-ponging in my mind between "But Ruby and ActiveRecord are so beautiful and easy to use." and "But what happens if the 'magic' breaks?"
Trust me, I have been thinking about what you say every day for the past 5 days.
You're thinking too much. Unless it's a "the world is ending" level security fix like the recent yaml stuff, wait a couple weeks for this stuff to come out and get fixed. Then upgrade.
