Once you know about road bikes...there's no going back.
This is why I recommend that newbs buy used if at all possible. In almost every case, a new rider will want a different bike/better bike before long. Might be a month; or might be a year; but regardless, if they buy new, they're going to lose 50% of their money when they sell it. Whereas if they buy used, it's usually possible to sell for what you paid for it.
The good news is: You've discovered the joy of road bikes! There's nothing quite like 'em! I had ridden all sorts of bikes as a kid- single-speeds; 5 speeds; 10-speeds- all heavy BSO's. Then, in my 20's, I rode a road bike for the first time, when I rented a bike to ride in Central Park....and I was instantly hooked!