Biking in Tokyo is less freeing than public transportation because of the added time finding a place to lock up the bike. I bought a bike thinking I'd use it but it turns out it's actually much less free since if I take it I'm stuck with it the entire day where as without it I can easily visit the other side of the city on a whim via public transportation. The same would be true in Singapore, Hong Kong, Paris, Berlin, many other places with good public transportation.