1) You may not have a laptop. 2) Your laptop might be your employer's. You don't bring it with you to the beach and on vacation. 3) Your laptop may not be ene

1) You may not have a laptop. 2) Your laptop might be your employer's. You don't bring it with you to the beach and on vacation. 3) Your laptop may not be energy efficient/small. Not everyone has the latest MacBook for personal use. 4) You may not have a keyboard at all and still use the tablet for productive tasks. Typing speed is rarely the biggest blocker when programming. Sometimes you just stare at the screen and think. My point is that there are many scenarios where one may need/want similar solutions and a laptop is not a solution for different reasons. OP's comment is like asking why not use a motorbike instead of an electric bike. Different uses/budgets/requirements. And yes, expectations.