Mike...Any time!
You are right. It is better to be parked in a motel somewhere than fighting it. Most of the controllers are sincere people trying to help. In fact, I think FSS people often are overly conservative though.
Often one checks on the wx and they read sigmets and airmets which are general. Most people with experience want to go as far as they can SAFELY and not rely on something vague as above. A lot of the FSS people do put their personal viewpoints to things unnecessarily. They don;t realize(like I said in the previous posting) about the background anyone has. They CAN'T know about some local yokel on the other end of a mike.
I think too, some are worried about liability.
But you have to study the situation,get updates, and never hestitate to park when it is not good.