Towards the end of my film days my normal carry load was a Canon F1 with the rotating sports finder (a couple of hundred grams on its own), a 50/1.4, sometimes also an AE-1 with 50/1.4 (depending if I was using mono and colour at the same time, really not sure why I owned two 50/1.4 when I don't think I ever used more than one at a time), extension tubes, a no-name 70-210 zoom, an electronic flash, sometimes a 500mm f8 mirror lens, sometimes a tripod. Not sure I could even stagger more than a few yards with that lot these days.
These days my normal carry load if I'm not doing something to warrant a DSLR is a Fuji S5700 bridge camera, about a quarter the weight of the F1. And my SLR load is usually a D7000 and Tamron 28-300, which covers most situations, or a more specialised lens if needed e.g. my Vivitar Series 1 100-500 manual focus zoom for animals etc.