I am long since past my teen years, but as an avid traditional cyclist who is now an ebike enthusiast, here are a few points off the top of my head:

• ebikes are consistently faster. It is easier to plan your day around ebike trips, since they take about the same amount of time every day. With a regular bike, your trip could be twice as long today because yesterday's tail wind has been replaced by a stiff head wind.
• Issues involving extreme heat and poor air quality (in my experience, these often go hand-in-hand) have less impact on ebiking.
• Terrain not being an impediment gives you more options. There may be some path you'd never have contemplated before since it is hilly or goes down into a deep ravine you will eventually have to slog your way out of, and so you'd wind up taking busy city streets instead with the danger that entails.
• ebikes do give you exercise. You can usually control the amount of pedal assist or even turn it off for a real workout. When off, you will get more exercise than with a traditional bike since ebikes are heavier. But you can do this exercise wherever it is safest to do so and go electric when you need to move with traffic.
• If your city has a main corridor for cycling in terms of say an off-road paved trail to downtown, but you'd have to go out of your way to an extent to reach it, you will be more likely to do so on an ebike. It is just not as much of bother to seek out the better and safer routes.