If the stat was actually strong, many melee builds could become very interesting. However, right now it's just a joke. The worst is that it's not just thorns that sucks, you can add bleed effects, indestructible, life after kill, XP per kill, level requirement reductions, every proc effect, "offstats" and the painfully underwhelming CC reductions. There are other affixes that are just cool to have, but don't make compelling choices on their own, such as damage reduction which for some stupid reason was split into ranged, melee and elite (seriously, WTF???), life on hit, which is often underwhelming next to life leech, or pickup radius which happens to be important for a few isolated niche builds.
Overall there's a metric ton of (deliberate?) cluttering in the current affix pool. It's no wonder everything that drops is unusable garbage when more than 60% of the affix pool is precisely that, garbage. Hopefully they won't screw up again with the loot 2.0 thing.
Edited by Blashyrkh#1824 on 7/22/2013 7:20 PM PDT