Forum Moderators: open
Code for compliance with FF, tweak a bit for IE, and unless any single visitor is worth a potential $1 million with a high conversion potential, let the rest consider whether their rugged individualism is worth sticking with.
I learned a long time ago that in any respect, other people's so-called "needs" or "demands" don't necessarily translate into an obligation on my part. Obligation is by free choice of the individual - you or me or anybody, and that includes how we code for browsers (or not).