Depending on how much a Linux user experience is, the attachment and evaluation is. When a person divot him/herself to creating these so called "Tools", He/She will be giving a huge part of their time and in away or another their life. Yes Sir, Linux is a religion. When you spend hours talking to the compiler more than talking to your spiritual adviser or maybe yourself, or when you spend time reading C/C++ Bible for Linux instead of your holly book, I guess Linux is a religion.
Thank you for you contribution khess, this is the least thing to say.
And for the guys that think that O.S. are tools, I say this is your environment your world not just a comfy tool.