I want you both dead
No, seriously, IE7? It's over 4 years old. Why do people even bother about IE6 or 7? Do you support also 800x600 screens? They were popular when IE7 got released
Come on. I can understand people who drive ancient cars, but few years old browsers? IE7 has at least 2 good documented highly critical, never fixed bugs that allow attackers to FULL system access from remote and the only way to prevent these attacks is to "avoid sites that you don't know" or "do not browse untrusted ones". Antivirus won't help. Firewall won't help. Nothing will.
IE8 also has one highly critical and one less critical hole (and this one will be never fixed because is known since the day IE8 was released, but nobody cared).
For example Opera has no unfixed critical holes for over a decade...
So it's not even about standards - you like your Internet Explorer like a man can like a woman - especially the easy one. But don't forget your woman has AIDS. And it will cause trouble, sooner or later.
And about standards - there are no "issues" with IE7 or 8? Right click even on sitepoint.com. Choose source. Figure out what "<!-- alex's ie specific styles -->" stands for. And all the stylesheets below?
And that's nothing compared to messy markup caused by IE compatibility (without last-child for example you still have to add different class for your last elements etc. etc.). Lots of superfluous ids, classes or even elements (and I'm not even starting talk about html5shiv...).