On a clear motorway though with no traffic then it would be a shame not to.
....except that's a straight road. Seriously though, your further postings reveal much more eloquence, rationale and skill with words - a pleasure to read points of view argued as well as you do.
I've had the good fortune to attend several track days (cars and motorcycles) and they are obviously the only safe scenario when the need for speed arises.
I'm not sure that many of the individual braggards (myself included) who posted on this topic unleashed their horses and scythed through rush hour traffic in their quest to hit the rev-limiter. But you are right. A tyre failure, a semi concious French farmer with a trailer-load of cow sh*t, pulling out into your path - or just some innocent, pootling along, not really aware of what is going on around him, could make the scene very ugly.
I guess it boils down to respect for the circumstances and awareness of personal limitations. My car is faster than I am. The motorcycle I ride is faster than I am. Had I had access to either of them when I was - say 25 years old, I would definately have killed myself.
I cannot factor every possible eventuality when I'm out on the road. I feel that my years of experience and tuition on the road and on the track count for something, but it's usually the unforeseen that really fucks you up.
The touble is, fast is fun. Good roadcraft is satisfying and rewarding.
It's all going to be over sooner than any of us would like. The oil's going to be gone, the roads are going to be clogged with uniform-shaped jellymoulds running sedately on solar and hydrogen - or (dare I say it) nuclear fission - all occupied by depressed, uninspired and mournful drivers. I just feel I must make hay while the sun's still shining - and making a value judgement on the limitations of myself and my ride.