Very few homebrewers are growing and malting their own barley because grain is pretty cheap so there's no return on your time and money spent.
I buy grain by the sack and I just bought 55 lbs of Marris Otter for $51.
I can get domestic/Canadian malts for less than $40. If you are getting grain at your LHBS for $2/lb its still pretty cheap. I also like to try recipes that use different malts and see what they bring to the beer. If I grew, harvested and malted my own, it would all be somewhat the same.
Now if you want to add raspberries, cherries or other fruit to your beer, those are way more expensive, don't require all the processing that malting does and can added to other food items or consumed as they are.
I live in an apple growing area, and can get apples for cider really cheap, but they're not the kind of apples I really want, so I grown my own.
I'm sure your kids would enjoy stepping out into your back yard and picking fresh fruit.
In addition to fresh fruit, you could be growing all the vegetables for your family and still be consuming less of your time compared to growing and processing barley for brewing.
If you have your heart set on malting at home, I would suggest buying some un-malted barley, and you see what's involved in the process. Note that most barley is grown for animal feed, but if you hunt around, you can find varieties that are used for brewing. If you can make the process work for you the next step would be actually growing the barley at home.
Good Luck with your projects!