Yeah, there are much lighter ones that'll do the job. You might only want a rear rack - unless you do heavily loaded touring. A rear rack is handy though - I recommend one. Even after my bad personal experiences with aluminum ones. I had a really sturdy Blackburn Trail aluminum rack on one of my old bikes. Hauled like a champ. I guess I'm kind of paranoid about breakage now, I can keep the one I have for now.
"Things look different from the seat of a bike carrying a sleeping bag with a cold beer tucked inside." ~Jim Malusa
2009 Trek 520-Brooks B-17 Special in Antique Brown
2010 Surly Long Haul Trucker-Brooks B-17 Standard in Black
1983 Fuji Espree Single Speed-Brooks B17 British Racing Green