When we go places, my wife buys a set of postcards from the places we visit, and I'm off the hook as far as needing to show the key places. In any case, the light is usually not right, there are too many people, you don't have the right gear, etc. So I feel free to shoot whatever catches our fancy. If we end up duplicating some of the postcard scenes, so be it. There are also times when seeing everything through the little viewfinder is limiting and constraining.
Sometimes the best way to travel is to do it slowly, by foot or by bicycle, with frequent stops to ask for directions (even when you don't need them), and check out the local bakery, charcuterie, wine stall or farmer's market. These experiences are recorded at the end of the day in a journal, where impressions, smells, sights, sounds and the various people you come across end up in little sketches of words and scribbles. The camera is there as well, but it tends to record with too much fidelity, and with too much accuracy.
My wife and I spent some time in NY this summer, avoiding the parking lots that Lew highlighted by taking in the train and then walking all over, interspersed with subway jaunts here and there. I ended up with a few photographs, but more memorable was a dinner I shared by some cousins, a set of sandals she bought on a whim, and our walks across a number of urban parks. During our walks, I passed more than once photographers with full body harnesses carrying two or more cameras with additional supplies on their back,s and looking very determined, and trailed by a child or spouse (and in one case, a whole family entourage). I'm sure they got some photographs, but I'm not so sure the overall experience was wonderfully positive for all concerned.
I like having postcards. They're pretty cheap, show the standards in much better light than I could manage, and allow us to say we've been there.