There is certainly a cost/benefit to these tools you have to consider.
Have a few machines you only do basic admin on occasionally? A CFM is probably too complex and a waste. Have a huge infrastructure that scales rapidly, and you have daily changing requirements, or repetitive tasks? It's a life saver.
If you can happily and efficiently manage 100+ machines with a few lines of Bash.. you probably shouldn't change that.
Have a few machines you only do basic admin on occasionally? A CFM is probably too complex and a waste. Have a huge infrastructure that scales rapidly, and you have daily changing requirements, or repetitive tasks? It's a life saver.
If you can happily and efficiently manage 100+ machines with a few lines of Bash.. you probably shouldn't change that.