I ride as close to every day as I can. I own my own business, and use it to see clients in the summer. Most of my clients ask me where the bike is if I show up in the truck
Usually I tell them I didn't think they'd be impressed if I showed up with their computer strapped to the back seat.
During the summer, I put kms on the truck only when it's miserable outside, if I'm carrying equipment for a client, or we're trailering bikes to the mountains or to a track.
Obviously, I don't ride in the winter.
I would recommend keeping an inexpensive car for days that the weather is just too nasty, or you don't feel like holding your transportation upright. (Yes, I have days like that here.) Besides, unless you have really fantastic friends, you will find yourself having to carry something at some point that you can't feasibly or safely carry on the bike. Having alternate transportation reduces the temptation to try anyway.
Here's another reason,... I don't know if you have a significant other, or plan on having one at some point. Sometimes, the "gentler" part of the species doesn't want to have our hair messed up before we go somewhere. ( Not that I would know anything about that. I haven't been able to get a comb through my hair without serious pain since I started riding. *sigh*)
Besides, nothing stops you from riding everyday AND owning a cage.