For close to 20 years I've helped drummers transport and set up their 30+ piece kits. I've carried a guitarist's pedalboard that was overflowing with colorful little boxes, then helped him put all 6 of his guitars on the stand onstage because he, "really needs a different sound for some of the songs and this one just looks badass!" I've hauled a PA system around with a 100 different cables and microphones to mic everyone. I've made last minute tambourine/glockenspiel purchases for guest vocalists who wanted something to do during the guitar solo.
The least any of them can do is help me lift my 8x10 over the 1 (one, uno, une, ein) single step to get into the venue. I'll even wheel it the whole way!