I actively encouraged my children to play in mud, dig holes, splash in puddles etc when they were young. They had their hand washed before eating food but I suspect the one who had a penchant for sucking and licking stones might as well carried on using his mucky mitts! He survived the grime and is alive and kicking and robust 30+ years later.
We've always cleaned. Most of us will wipe down surfaces and mop up spills, and keep floors and loos etc reasonably clean. I agree that advertising propaganda has haad us doubt ourselves and buy into the antibacterial/disinfectant sprays and wipes. They weren't around decades ago but we are all here to tell the tale. Many of us grew up without the luxury of continuous supplies of hot water or daily baths or showers as well.
Handwashing is important and I impress that upon my DGC when they come to stay but other than that if they get dirty when they play I don't feel any harm has been done to them.
Humza Yusaf's resignation speech
Air fryer - combi microwave - oven? Help!