Having a license like this could make your software unusable for companies who need to get their licenses vetted by lawyers because they (and their customers) are afraid of being sued for copyright infringement. Do your users a favor by using one of the standard licenses (like the MIT License) that have better-crafted legal language.
As far as I remember, all of the major free software licenses disclaim any obligation to maintain the software, disclaim that the software is fit for any specific task and state that the user uses it at their own risk.