Proverb
It is a false logic to presume that love of an activity precludes the consideration of extenuating circumstances when determining the wisdom of the aforementioned activity.
Example
I love to run barefoot. Usually, running barefoot is a great idea. Yesterday, I consulted this logic and went for a short run barefoot, on the sidewalk, at noon. I neglected to consider extenuating circumstances such as 95-degree weather and the thermal conductivity of cement and asphalt, not to mention the delay of temperature-based sensation in the feet due to the concussive effect of running barefoot.
Consequences
Rather large, rather painful blisters on both feet.
Lesson learned, proverb. Lesson learned.
Snark on the Side 
Ouch!