Well, no, but that's because my band already has a bassist. However, I've encountered both ends of the spectrum of helpfulness - current band are brilliant, I can lift and carry all my gear but there's quite a few bits as it's the PA plus my bass gear (nothing weighs more than 10kg) and they all help loading in and out. There was a band in the past that always managed to turn up later than me so I loaded all the stuff in (I had a heavier PA and bass rig then), then I would sometimes get some help loading out but never from the idle sod of a guitarist. So the answer is that it depends, if you tell them at the outset what help you'll need and also give an idea of your travelling limitations, you'll either find a great bunch of people or, er, you won't.
PS. I meant to say that my current band would be perfectly happy to have someone in who needed help with gear, but I'm not leaving... 😁