Most of those monk abilities are "tric" abilities.
Let me explain: the only useful monk abilities are (IMO) speed, stunning blow, SR, and saving throws. Against spellcasters they kick ass! Against anything else they suck.
They get wicked defenses and very very poor offense.
Ki Strike: even if you got Ki Strike +5 at 1st-level, it doesn't help much. Your fighter's +1 weapon (from the wizard's Magic Weapon spell) gives him an actual +1 bonus to attack rolls! The difference is about +5 at 20th-level unless your party has a druid.
There should not be an unwritten rule saying don't bother playing a monk unless you have a druid in your party.
Lots of creatures have DR, and hitting them with a weapon that does 1d6+1 damage doesn't cut it. A monk probably won't have a high Strength score, they certainly won't have Weapon Specialization, etc etc. In other words, they will still miss, and (unlike the unarmed strike) won't do any serious damage.
(Flurry of Blows = Flurry of Misses, aka the Monk Lottery.)
The only class that I've seen that regularly enters melee with a d6 weapon is the rogue, and that's because they get sneak attack. Can you stun with a kama? No, I didn't think so.
Long story: the fighter is better at successful attack rolls per round, he is better at dealing damage, he is better at, well, anything except resisting Hold Monster
Tons of AC that also can never be lost
It really depends. If your PCs like being strapped naked to a table in a dungeon because it "builds character" then yes, the monk is a cool class.
Immunity to poison is nice. The others are kind of useless. Even Wholeness of Body hardly does anything, and slow fall is just ... bleah. Improved Trip doesn't work either - you use your Strength, and your opponent gets to pick whether they use their Strength or their Dex. When you can't even trip a wizard you know you have a useless class ability.
the ability to become ethereal several times a day
There are lots of other classes that you can do that with. More importantly, monks have very good stealth skills as it is.
supernatural attacks that cause death instantly
Once a week...
the ability to jump for miles...
Which is useless because you can't
see for miles...
Anyway, maybe I'm just dismissing the above comments, but I see very little in the way of offense from the monk. I wouldn't mind if they toned down their defense somewhat to give them the ability to do something useful in combat.