Why? Because I am not going to bend over backwards to cater to 5% of users.
When it's simpler for that 5% to simply upgrade to a more modern browser.
How did you figure that out, RtS? How "easy" is it for an organisation
with 3,000 desktops running NN4.7 to upgrade?
If you can upgrade your operating system, why can't you upgrade your
browser?
How do you know that the user has upgraded their operating system. You
haven't, have you?
Supposing there are 500,000,000 Internet users, that gives 25,000,000 NN
users. If each of them requires an average of 15 minutes to upgrade it
will take 12-man years for them to do it. How is that easier than you
spending a few minutes ... Actually, I see your point. It will be
easier, and quicker, for them to upgrade rather than wait for you to get
your code right.