Thanks--details are a bugger. I don't think I could see 2/10th's of a second, much less 2/100ths.
I never said performance isn't important. The fact of the matter is 3-7 fps isn't a deal breaker for most any of us. Nothing wrong with picking up a few fps, but if you are relying on an extra 3-7 fps to make the difference in a kill or a wound, IMO you need to change weapons.
To answer the question, I started shooting heavier weights because I thought I needed to. When I started there were no internet gurus to consult (there was no internet), and I didn't know anyone in my area that shot traditional bows. Over the years I learned more and dropped down in draw weight. I found that I have a lousy release with a light draw weight, and rather than work on my release I opted to shoot a little more weight because it gave me a cleaner release and I'm comfortable with it.
I finally settled on a bow and have been shooting it for around 15 years now, and when I get another one I'm going to drop at least 10# of draw weight (my release has improved a bit). FWIW, my selfbows (that I just started shooting a few years ago) are lighter in draw weight than my main bow, and they are nowhere near as fast. I know without a doubt they will do the job just as well, as long as I do my part. I've shot higher scores at tournaments with my selfbow vs. a much faster longbow. Go figure.
Now, the flip side to your question. If speed/performance is the be-all-end-all, why shoot/hunt with a traditional bow? There are much faster/better performing weapons available. If 3-7 fps is so important, why not use a weapon that is 100+ to 1,000+ fps faster?
It's a rhetorical question--no reply needed.