That's an interesting comparison. If you can just hop on your bike in whatever clothes you'd be wearing anyway and ride to work without needing special clothing (and certainly most of the time you can), then it seems reasonable to think that you should be able to just hop on whatever bike you'd ride anyway and ride to work without needing any special accessories. If the bike you normally ride is a lightweight road bike, why not?

Of course, this forum exists specifically to overthink things, right?