Camera comes with me everywhere except:
Work - A professional office is not the place for a DSLR, unless your office is Reuters or Straits Times!
Swimming pool - I do not have an underwater housing ... Yet :devil:
Toilet - I am not about to get arrested, plus where to put it while you do your business!
Other than that, my 5DII and 7D are permanently in my bag. I take them with me on my frequent business trips as there is always something great to take photos of.
When I dont feel like taking a big bag, I take my photographers jacket and/or my cotton carrier harness (which I love but always gets strange looks from people).
To all those who think their friends will mock them for carrying round a DSLR everywhere, don't worry. Once they see the pictures you capture of them they will be asking you to bring it along again and again.
SeldomHere