Not every site is about money. My numbers are actually closer to 3% than to 5%.
I could not care less.
I could not care less.
Go where your customers are. If you don't have customers, do what you like. Although I'd question whether you even need a website if that's the case.
I am not downloading GBs of VMs and spend hours of time to validate IE for a couple of illiterate smugs.
;)
But that has to include the all the customers, not just 97% of them. Start with the low-hanging fruit of course, but never settle for "those customers are too much effort to bother with". That sort of negative sentiment is toxic.
I, and many others, do care. It is appreciated someone else sees the bother.
We have a set of users who are using our site in healthcare environments, on locked-down computers that are difficult/expensive, so in some cases they're stuck on IE7/IE8.
I'm pretty sure calling them "illiterate smugs" wouldn't go over well.
On the other hand, these computers don't have access to the general internet, so in this case they don't risk running afoul of site creators who decide to be "clever" and go out of their way to aggressively (or even insultingly) demand that visitors upgrade. But restricted corporate users who hit that sort of thing would be unamused.