I like debates like this - as long as they don't get ugly..so lets assume that you will never change the mind of professional photographers - and that they will always think that P&S cameras are inferior in most ways...
So...now lets get to real world situations, like around Disney in 90 degree heat. So here you are wandering around the park(s) your DSLR hunkered down over hanging off your shoulder - you are trying to avoid wacking excited folk running around absent mindedly as you dodge in and out of them, getting in and out of rides, line ups, washrooms etc etc...Not only is your four pound (with lenses of course) swinging missle a hazard but you are also carrying a bulky aresenal of other attachments sequestered all over your or in my case DW's body in that heat, crowds, and rides. I know I usually curse at the backpackers swinging their load around narrowly missing me, well I am not much better...Now, contrast that to a P&S stuffed in my shirt pocket that takes almost as good pictures in the daylight (at 4x5 or 8 x10 sizes of course).
Let me take another case in point that actually happened to me a few year ago. The wife unit and I were at Canada's wonderland ( blunderland to some) - if you are not familiar with the park , it is devoted to stomach churning rides. The scenery and photo ops are very good there so I had my trusty SLR (an Olympus Om2n) with me - if you are familiar with that camera - even with 50 mm f.1.2 lens it is a diminuative camera compared to todays behemouths. Anyway, on several rides I was denied to ride unless I stored the camera before. Well, I did , because I had decent insurance on it, but back in those days the camera and that particualr Zuiko lens was as expensive as a D300 these days...So fast forward..imagine at Disney the CM's telling you that you have to leave your D700 and your Nikkor 70 - 300 VRII lens behind...hoping that someone who looks " just like me" does not appreciate my purchase
...get my drift - as far as I know Disney does not have such rules...yet...
See my point for a P&S???
Sure bring along your DLSR for the parades, fireworks, indoor shots etc etc..I do..and I lock it up for use..later...
I have a Sony DSC- W120...I carry it everywhere - never notice the weight and it takes good pictures - not photographs - pictures..sure the lens is not fast, the flash sucks, fireworks and nighttime photography are a joke... but I still get the picture...and I am getting really good at the exposure compensation feature so I can take 4 to five shots quickly at various stops over and under then sort them out later..and the anti-vibration - Sony's steady shot technology actually works semi decent on the Tower of Terror...try that with a four pound sledge hammer balanced on you hand..
Everything has its uses..