The last two weekends I had a day to climb, and an initially promising forecast always turned to storm. Rather than stay home, we sucked it up in two ways: 1) leave town at 5 am, 2) modified our objectives. In both cases we ended up practically the only climbers on a couple of classic ridge climbs when everyone else stayed home. We were well off the routes before the storms started, and keep a "trigger finger" attitude of paranoia when deciding whether to get on the ridge or not.
Here is a pic from yesterday, we had a blast:
We had to be ready for a few things: 1) retreat from anywhere at the first sign of trouble, which means a willingness to leave expensive gear if required without a second thought. 2) Full knowledge of each descent (emergency or otherwise) possibility. On one day, our climb was about 5.5 at the hardest. The decision for speed meant we soloed most of the ridge to beat the storm, and used a thin 8.5 mm rope doubled so we could simul-climb the 5.5 pitches. On another day, with harder climbing (5.10a), we carried 60 meter double ropes, because this climb was more of an "edge" than a ridge, and we could actually retreat down it. The heavier packs slowed us down a bit on the approach but it was required to maintain our safety margin so we didn't give it a second thought.
If you ask me, these calculations of time, weather, ability, energy, etc. are one of the great gifts of mountaineering. It's a kind of "deep play" that unites rational and creative abilities. I'd say in this realm you are only stupid if you didn't think through the possibilities and come up with an answer you can live with at the end of each decision tree. Of course, you could always just stay home and avoid this whole line of thought!