I 10000000% hate pull carts. They do no good for anyone, they are for people who generally can't physically carry their own bag and either 1) want to walk but don't want pay for a cart, (which would help the golf club in revenue) or 2) pay for a caddy.
Then someone may say that this would be the same as someone who carries their own bag, nope because a pull cart can cause more damage to the course than a two person motor cart. (Esp. when people pull them right next to the green).
Sorry for the rant.
I would always prefer to walk, first with a caddy and secondly carrying my own bag, and lastly with a cart.
The "more damage from a pull cart" thing is a total myth. By the logic employed in that argument, one does the most damage by carrying a bag.
a) To answer the question, I always like to carry the bag. (8% of the time use a 3-wheel cart my buddy loans me if the back is a little creaky that day)
Lot's of times people say "what did you do today"? I like to answer with "I hiked 7 miles with a 30lb pack". They almost always get a look of astonishment on their face and come back with something like "wow, that's ambitious". Tell a lot of people "I played golf today" and they think "slob rode around and drank beer all day". Give it a couple hours after the "hike" comment before clueing them in!
b) Kyle, I completely agree with you -- this argument against pull carts is ludicrous.
I like to think about it this way. If I placed my hand flat on the cart path, and then you ran over it with a loaded-up golf cart, probably going to be a lousy outcome. Place the hand on the cart path, have a 185lb man carrying a bag step right on the hand, another lousy outcome. Hand on cart path and roll over it with a Sun Mountain 3-wheel cart, no worries lets go play some golf.
JMO.