Tough question with no real answer
Tough question with no real answer
First, if you are concerned about the consistency of output from what you view on your monitor, and what comes from the camera or scanner, AND what is then output to your printer, that is all a function of color calibration. Web ouput is another issue.
However, you have little control over what others who view your images do in terms of calibrating their equipment. Even over the web, you may correct your images for web content, but that has no impact on the monitors and systems viewing your images on the web.
Maintaining color profiles within your system is an ongoing task due to aging of things like monitors, etc.
Maintaining color profiles in the hope that all the people who see your work are also using the same calibration profiles and maintaining them, or that they even consider the problem, is out of your control.
If you are producing work that is consistently going to the same recipients, and those recipients are sophisticated enough to deal with the color profile issues with regard to the equipment that will be rendering your images means a level of communication to match everything up.
Frankly, it's just a big PITA. Best that you calibrate your system and know enough about profiles to switch your profiles to accomodate the recipients. Most of them are going to do their business their way, and are not going to accomodate you, if they are paying you for your images.
Not much about profiling/calibrating here, I know. Mostly just real world stuff about what to expect in terms of cooperation.