If Android didn't have side-loading, the capability of having third-party app stores, and access to the shell (to the point of being able to run a terminal), I would likely not be using it. The more PC-like it is, the more usable it is to me, in the medium / longer term, as devices in tablet form factor replace mobile PC use cases.
There are safe ways to enable access to it. Take ChromeOS for example, which has a hardware switch on the outside of the device that "jailbreaks" it and allows access to these features. Lack of such creativity by the Android team with regard to security has had a major impact on their current state.
