I would agree with that. I've processed my own C-41 and E-6 in the past, and have found that color film processing just isn't a creative process in the way that B&W film processing is. I'd rather send it out. You might want to do it if you need film processed quickly and live someplace where there are no convenient labs that can give you the quality you need, or if you frequently need something like fractional push processing, and don't have access to the sort of lab that does that routinely.

Printing is another story.