I don't think they are heavy, I just think there are lighter-weight ones available now. Do you think your fathers, grandfathers, etc complained about the weight of them? Most fellas have desk jobs now so you might not have the musle tone the prior generations had. I have one of the desk jobs but am very active on the weekends, keeps me in better shape than most it seems. I am only 57 but when I get older, might have to consider the light-weight options. Every week it will feel lighter as your arms/shoulders get some tone built-up. To ME, I think the Remington auto loaders are great guns. Some good advice above. Take care of the "O" ring and it will last for decades, I am still using the original one in my 1187, bought it new in the late 80s. I do have a pack of replacements, just-in-case, but I have 3 or 4 Rem autos (really only use one now). I also clean it every 2 or 3 weeks, I reload my own and LongShot isn't as clean as factory loads, also I hunt a lot of tall CRP and the trigger assembly seems to be a magnet for seeds and grass stems.
I took a fella out on a hunt a couple years ago, his gun was malfuctioning, so I traded him guns, his was a Tri-Star 12 gauge, it was so light, I would have guessed it was a plastic prop-gun, but he did fire a few shells....one at a time, as it wouldn't feed. I will keep lugging my 2 ton Remington for now. There is normally only 2 of us hunting, so it is not like we have to hunt long days.