"You wake up in the 21st century. You tell your android to fetch your slippers, but only there is no android to fetch your slippers. You keep them by your bed. Which is only modest memory foam, so it's possible your back aches slightly. You get up and have to walk to the bathroom. You haven't set the thermostat yet. because spoiler alert, you have to go to the wall to change it, or if you're lucky change it from your phone. Voice command? It existed, but Probably not for you Now that it's hot in your house, and you wait for it to cool off. You relieve yourself, but not in time for your teenage daughter to tell you to hurry, because your whole family only has 1 toilet. You can forget about brushing your teeth before everyone uses the toilet and fills the room with a human aroma. Room freshener exists but it isn't instant. Better hurry. You have to take your children to school before going to work, and if you're late. You could get a written reprimand. You go to your garage, and in front of you is a combustion engine driving machine. Yes, you will have to drive it yourself. On the ground, no flying cars. Oh, did I forget to mention. You're on Earth, not Mars. So, the heat is generally unbearable. Until it becomes winter. Then, good luck ever being comfortable. The smog, and the pollution fill the air. You cough. Breakfast you ask? You do not have time. You have to buy it on the go from a local coffee shop."