1. They are not often a place I want to go. They are usually cities and not the countryside
2. If I really wanted to go to a place, I would plan to spend more than 36 hours there.
3. The emphasis is on running from one thing to another as fast as you can. Savoring, bumbling around or "doinking" isn't an option.
Charles Isherwood addresses that issue in the opening lines of a recent post:
Trying to sample the pleasures of some cities over a weekend can be a bit like entering a pie-eating contest. Sounds like a madcap lark, but after a while you’re likely to feel overstuffed, foolish and maybe a little sick. Sure, you could do Paris without the Louvre, but why? Even negotiating the fabled museum itself in that time frame would be a challenge. San Juan, the capital of Puerto Rico, poses no such problems.
So I guess the trick is to choose a "less worthy" site to "do" in 36 hours.. or stay home.