I know, park and grabs and guardrail caches wouldn't be my preferred type of caches either. Here's the thing, I am often looking for just this type of cache. They have some qualities that fit my needs.
1. I often find myself between appointments with a short amount of time in which to make a find.
2. They are, more often than not, snow friendly.
3. I should not be caching in the woods by myself (for so many reasons...) and yet most of my caching friends are working when I am available.
4. I am traveling through a town and would love to check off another town in the state, but I have a destination where I need to be by a particular time.
I do appreciate a guardrail cache that makes me smile (a guardrail multi cache or a creative container). So, there you have it. If you don't like park and grabs, don't do this cache. Otherwise, enjoy!!