Err hit rating? Yes, you should have that. There is some debate, currently, because the raiding hit cap of 17% is quite high, however. Basically, having 17% hit guarantees that you will hit the mobs every time. However, at the current level of gear, you are sacrificing a lot of crit/haste/whatever to get that hit rating. I think the SPriest writer did a breakdown of this, but basically the difference between getting the hit cap and not getting the hit cap isn't that big, because if you HAVE things like more crit, it means the spells that ARE hitting are hitting harder than the spells that hit all the time in the 17% hit rating scenario.

If you aren't really doing raids (except the Baradin Hold boss, say), you only need 6% hit rating (I think) to be hitting mobs all the time in heroics. After that, you can reforge away all the hit into other, more valuable stats. If you ARE running raids with a raiding guild, however, it might be worth it to hit that 17% cap. As Fox the SPriest columnist said, there are many utility attacks that you would not want to be missing like counterspell, spellsteal, whatever. Also, if it's right before a phase where you can't attack as much, missing your DoTs right before could mean a substantial DPS loss. You could also have bad RNG during a burn phase, or something, and miss a string of spells and waste most of a BL/TW/AH cooldown, or something.

TL;DR - if you're not raiding much, get to 6% and then get other things. If you are raiding, 17% hit is probably more valuable, atm.

Side note - Fox found that at about 13% hit you're doing more DPS than you would be at 17% hit on a raid boss, simply due to the extra oomph from things like crit and haste. But again, there are certain, important spells that you just don't want to be missing.