IE7 is not standards compliant. That's why there is the conditional comments.
My sites don't look any different in FF but i would rather create it working in IE6 & 7 then look at it FF. IE is the mahority browser
You're missing the point - every web developer worth their salt will make a site compatible with all major browsers, so the market share is a moot point. What we're talking about is ease of workflow - it's just far simpler to build a standards compliant site that works in FF / Safari / Opera / etc and then add hacks for IE, than it is to target IE first and then have to backtrack for the other browsers.
However, it's still a major PitA to get IE6 compatibility. Thankfully we can pretty much ignore 5.5 these days.
Linking to an image with swearing is a bad idea.