I have other lenses - my main lens these days is a 28-70mm f/2.6-2.8 : )

I had chances to shoot surfers this weekend though - and, well, 70mm sucks for shooting them from shore.

I have to admit, I do have a knee jerk bias towards wanting f/2.8 lenses : ) - unfortunately I have yet to see a zoom that goes above 200mm at f/2.8 (you can get 300mm primes at 2.8, i believe - but they're also $$$$$)