This isn't the only time you do this. There's the 3px text jog, for example, and the italic bug. Even your box model is munged to be "easy".
But here's the reality: I'm the programmer, you're the program. My brain is several hundred times larger than yours, and it shows. When I say
width: 50%, I want it to be exactly 50%--not 50% unless you think it needs more. If I wanted that, I'd use
min-width(not that you support it).
In conclusion, fuck off and die, IE.