You forgot at least one choice.

The one I'd have chosen would be, "I could go to work by other means, but the bike is more convenient".

Yeah, I could use the bus, but it would cost $2 each way and take nearly four times longer. And coming home, I'd either have to leave work ten minutes early (which would not fly with my boss, my co-workers, or the taxpayers), or wait at the bus stop for 55 minutes for the next one. (And I could walk home in 65 minutes.) Now that I think about it, walking to work would take less time than the bus.

Yeah, I could use a taxi, but it would cost about $15 each way and take a little more time.

Yeah, I could buy a car, but it would cost a fortune (comparatively), I'd have to take a third job to pay for it, and I'd have to figure out where the put the darned thing when I'm not using it. It's not like I could hang it on the wall in the living room at home, or hang it on the wall in the server room at work like I do with my bikes.

So yeah, I could go to work by other means, but the bike is more convenient.