It's funny how many people I see in this thread saying, "I don't get all the complaining about heavy basses," are many of the same folks I see in the amp section saying, "No way I'm moving a 30 lb. amp and a 50 lb. cab when I can move a micro and a little 20 lb. neo cab."
I go for lightness in my basses because of a recurring shoulder problem that's finally been starting to lighten up now that I've lost weight and started exercising regularly again, but I'll dang sure move an SVT and 810 without complaint unless there are lots of stairs. The amp moving takes but a few minutes but some of my gigs last hours with very few breaks.
But I must say I am quite shocked and surprised how so many of you throw us light bass lovers under the bus for being wusses when you wouldn't dream of moving an SVT. Seems like I've got you beat in the manliness department, eh?