If you feel the need for an electric bike, many companies will sell them to you, or will sell you conversion kits for a bike you may have lying around. Evelo has devised a particularly simple conversion by embedding the motor, battery, etc., entirely in a single wheel.
Well, not quite entirely. You need to affix a wireless controller to your handlebars and adjust the power output of the motor digitally as you ride. I haven’t tried it but that sounds awkward at best, possibly dangerous. And there’s the price, $999. That’s more than a lot of complete electric bikes cost, and probably 4x what a conversion kit normally goes for.