Everyone (well almost) likes simple. Shooting 35mm is far simplier than shooting 4x5. But often you need the qualities of a larger piece of film, swings and tilts etc. There's more useful data at the cost of complexity. Simply working in Adobe RGB (1998) (I'd be using ProPhoto RGB, since that's what my Raw converter uses as its underlying processing color space), then converting to sRGB for web use isn't really all that complicated! Plus I don't throw away useful data. But its your call and your data. Considering that we have many affordable desktop printers who's gamut exceeds that of Adobe RGB (1998), I don't find it useful to throw away those colors from the get-go.
But I'm on record about how I feel about the role of RGB working spaces:
http://www.adobe.com/digitalimag/pdf...p_colspace.pdf
Canon and Nikon put sRGB on their cameras for those who don't want to shoot Raw and really want to throw away a huge amount of data (at the expense of complexity). Again, if you want the camera to do all the important rendering and then fit that into a small color space, by all means do so.