It's a good choice, but an eccentric one. I'd highly recommend getting your hands on the camera by either borrowing or renting one before purchasing, because the reality of the camera in your hands for a week should decide you either way. I knew an X100S was a really bad fit for me, and a week's rental had me saving up for the X100T. :)
However. I am also someone who shot with a film SLR (Olympus OM-10 + 50/1.8) for 20+ years, before going digital, and who has full Canon and micro four-thirds bags o' gear, and that knowledge base to judge what is and isn't appropriate for me, as a shooter.
The X100 has all three of the digital camera features I think are essential for learning photography deeply: ability to explicitly set aperture and shutter speed (and better than most in this regard with the explicit dials, rather than a mode dial), RAW capability, and a flash hotshoe.
But, the drawbacks to the X100 are that you're going to be buying one used, so condition and operability matters as you won't have a warranty. It's also the v1.0 of its kind, with the attendant drawbacks (hence the X100S and X100T). And the lens is a fixed prime. With the optical viewfinder, you'll have parallax issues with framing.
This is a great camera if 35e is your go-to and you don't need lightning fast tracking autofocus. Not so great if it isn't your go-to and you end up shooting fast action. And as a beginner, you will be shutting yourself off from learning other focal lengths. If street shooting, old style with wide angles, is going to be 100% of what you shoot, then this is quite possibly the perfect camera. But if you're going to be intent on exploring and don't yet know what you want to shoot (wildlife, sports, macro, studio portraits, product photography), there are a lot of things this camera is less well-suited for that could make its future longevity in your bag less assured vs. an interchangeable lens body (like the X-Pro1 which has all the same v1.0 drawbacks as the X100, doesn't have a leaf shutter, but does have an interchangeable lens mount).
OTOH, these are digital electronics. Most camera bodies won't last you any longer than a cellphone or a computer would in your household. Judge accordingly.