I'm currently dual-booting Windows 7 and Windows 8 Development Preview.
Didn't like the Metro interface at all and I like touchscreens even less so I disabled Metro.
Very early days, but I think Windows 8 will be fine. Will I buy it? Not sure as I really do get on well with Windows 7 so I probably won't.
At my age, Windows 7 will probably outlast me!!