There are myriad ways to say this, and unedited they all sound wrong. So, ahem.
"Dear colleagues, friends, and miscellaneous masters of my universe. I said I was going on holiday. I did not say I was leaving town. I have no use for casual travels when I can see, hear, and feel most of those things in my head. When I said I needed a holiday, I meant getting a few months to work on the important things in my life, namely mathematics, software development, and showing the world that humans are trivial objects... without being distracted by folks so lacking in imagination as those who find meaning in commercial activity. Kthxbai"