Its not like assistance tools don't exist, but by squishing all the information in an image into a smaller visual space that I can distinguish, it makes everything look worse. Which is fine because I only really need to be able to distinguish difference in color that precisely about once a month so I only use a tool when I need it. Most colorblind people don't have enough need to even have a software tool.

I am always going to be using a computer with normal colors, as are my cohorts. You can accommodate us or not, the burden is on us. But that means we are going to think your website looks bad and/or maybe isn't even worth our time if we have to muck around with tools to be able to use it.

Heres an example of what it does: http://imgur.com/a/giSxg and how bad it can look: http://imgur.com/wlWgC The top is normal, the rest are transformations I'll use (the 2nd image is the one I usually need).

In the meantime, any developer can make their own site more color-blind friendly without waiting for the drivers or the whole web to change. Why wait for someone else to solve a problem you can solve right now?

I'm not sure it's that simple (but that's another discussion that's going on right now =)).

Aside from that, some of the design lessons and considerations that come from considering color-blind users tend to be good design principles in general.So - they may be good considerations to make anyways.