It actually takes a much longer time to be Away from the keyboard. If you got stuff to do sure, but if you are going through Low Sec then best to stay on the keyboard, you already risk having someone sitting on the other side in Low Sec waiting for someone to decloak and warp disrupt you.
Trust me when I say this, regardless of the ship (but most frequently haulers and miners) gankers will bump your ship in High Sec and keep you from warping or jumping because you are far from the gate, next thing you know 10 or more people show up (or just one guy that multiboxes them all) and kills you. You jump the next gate manually you land right on top of it, auto pilot lands 15km away from it, which is why it takes longer than manual piloting. And in Low Sec nothing stops them from killing you, everybody wants a kill.
Don’t ever touch the A button in Low Sec and only use the A button if you have stuff to do away from the keyboard and are in High Sec and don’t have anything valuable/flying something you can afford to loose. The time you are in a warp is enough to alt-tab to youtube or something if you have your game on window mode.