Working with Chroma Backdrops in Photography

To Key or Not To Key?  That is the question.
When I first opened my home studio, I thought a great way to save money would be to buy just three backdrops - black, white, and chroma key green (they also make blue) - which I could use to later change the background color to anything I want later when I edit on the computer.  And although the chroma backdrop is a lot of fun, I now wonder if the extra work is worth saving the money.
Editing the backdrop to a different color has proven to be be a lot more steps than clicking a button. 
It's important to have the backdrop lit as evenly as possible when shooting with chroma backdrops, because shadows will create different shades & hues in the photo, making it more difficult for the computer to key out the green or blue in less tries. 
It's also important to have the subject's face as far away from the backdrop as possible... and well, I photograph A LOT of babies.  Babies are much closer to the ground than adults, so even if they are super far forward from the backdrop, they are still closer to the floor -- creating reflections from the green on their face.  And you can guess what that does once you put the photo on your computer and realize it's changing the color of their face!  Tip if you ever get stuck with these type of photos for a client... pick a color from their face to make the backdrop so that it hopefully looks more natural.
Another tip that helps a lot with chroma backdrops is to work with a small aperture.  Which, again, can sometimes be difficult with a small child or toddler model who likes to move a lot.  Although you are working with a solid backdrop, a small aperture will help it appear smoother in the photo, making it a little easier to edit.
I would definitely getting a chroma key backdrop if you shoot significantly more adults than children, however for a general portrait photographer it may not be ideal.  I also don't like the increased editing time.  There's definitely potential for some fun with a chroma color.   I can see how it might be more worth it for occasional creative work and still subjects -- just not as one of your main backdrops.  Go for the actual colors!