Genuinley impressive how much like hard work you've made the process of putting dishes into a dishwasher, popping in a tablet and emoting it later sound. Fannying around with tablets?! What are you doing with them? You take one out, you put it in. Some dishwashers you don't even have to do that anymore as, like with washing machines, modern machines are starting to auto dose detergent so you just top it up every now and then
I spent years without a dishwasher, and I hate doing washing up. you're either full, and it's the least enjoyable thing in the world to start doing, or you leave them there until later which is gross.
Putting the dishes into the dishwasher after a meal takes a minute at best. We don't have kids so the dishwasher goes on once every 2-3 days as it's a good size. Putting a tablet in takes 15 seconds and that is being generous.
Washing a fully loaded dishwasher load manually, we're talking here up to 9 meals worth plus snacks or whatever. 9 sets of washing, drying or putting away, or less if you leave everything in a pile to do in one go, but that wouldn't fly in our house.
Even if you could do that entire process in 5 minutes, you'd still be spending a lot more time doing it manually vs a couple of seconds to chuck stuff in, "fannying around with a tablet" and taking it out when it's done. Let's not forget that the putting it in and putting it away steps also exist in manual washing up, they don't teleport into the sink or back into the cupboard. It might be 5 minutes if you cook for one and just have one baking tray, plate and a knife and fork but 5 minutes to wash, dry and put away for 2-4 people? Plus pans, glasses etc? Maybe if you've got a production line set up and one person washes, one person dries, one person puts away etc. even skipping the drying part and air drying, it's still a lot more effort at the time I'd want to be doing it least.
I can think of probably 5 times in the last 6 years of owning our dishwasher that some food as been stuck on after a cycle. It's not really a hardship - it goes back in. Never had it not be clean after that.
From the sound of some of these posts people either need better dishwashers or better tablets as something isn't right if dishes are coming out dirty