Absolutely! The next time you are on a grass pitch a long way from gravel/tarmac etc and it turns into a quagmire after a day of heavy rain - well, you just hitch up, turn the knob to 4-wheel drive and away you go (but don't forget to turn it back to auto when you reach the road).
Apart from the above, it is very comfortable, well equipped, reliable and hardly notices the van on the back. My Aug '06 Columbia has 18,700 on the clock, 9,900 of which was towing our Senator Oklhoma (1499kg MTPLM).
Enjoy!