>>20
Have you even used it? Aero's not by any means slow on a modern (1.5ghz+) computer with even 512mb ram. The only bloat argument I might accept as valid is the amount of hard drive space used (7gb I believe) but you get a lot of free apps now, and again.. just how much bigger have hard drives got since 2001?
I'd say the bloat rate is far less than it was with Win3.1->Win95 or Win95->Win98\IE4, which were not updates that saw 5 years of computer upgrades inbetween it and its predecessor.