I agree that it would be cheaper to buy eggs at the store: If you consider the costs of raising them, housing them, fencing them... But, there are benefits that don't impact the wallet in a tangible way: My garden produced better this year, after one year of chickens than it ever has. 2 ears of corn on every stalk. 9' tall sorghum. ABSOLUTELY NO SQUASH BUGS. Very few cucumber beetles. Potato bugs and slugs in manageable quantities. In years past, all of these pests were a huge issue. Wonderful piles of chicken bedding to build compost piles with. Then there's the benefit to the brain: I've learned so very much since spending the last 2 years studying everything I can get my hands on about poultry husbandry. This adds to my ongoing passion for gardening. Then, there's the exercise: All the extra time I've been able to spend outside tending my flock's needs has been great for getting me out of the house and more involved in gardening and landscaping. Not to mention the exercise achieved by building a green house, hoop coop, hoop coop addition, and 2 tractors... followed by a new coop which is close to being finished. Then there's the social benefits: I recently put out a sign to sell eggs, and have met some wonderful neighbors through this effort. I've also made some wonderful e-friends on BYC and an other forum, great people who I wouldn't have met if not for the love of chickens. Then, there's the impact on my family: Seeing my little girl out in the yard, perched on a hay bale reading a story to the chickens, who by the way seemed to be captivated by her every word: PRICELESS!!! Finally, there's the satisfaction of looking out across the yard, seeing my flock of birds busily working their way through the grass for the delightful little morsels hidden there. Or the anticipation followed by the excitement of tending eggs for 3 weeks to watch that little chick struggle out of the egg, and watching that little creature grow into a sleek pullet. Waiting and wondering what color her eggs will be, and delighting in the perfect shape and color of that first one.
ETA: NOT A SINGLE CORN BORER OR EAR WORM!!!!!