All eggs and animal products are bad for human health. They are "bad eggs" for humans, buy very good eggs for the chickens.:
http://www.adelicatebalance.com.au/ ; http://drmcdougall.com/misc/2005nl/march/050300pueastereggs.htm
They are also bad for the animals, including us humans, the environment, etc, causes injustice, wars, poverty and starvation: http://www.youtube.com/watch?v=SvZpF1R6GUo
Standard industry practise with hens in the egg industry is to grind male chicks alive (since they can't make any profit of them), to take the eggs that hens often eats to regrain their nutrition lost by laying a very unnatural amount of eggs, and to kill the hens when they around 72 weeks of age, at the time the industry doesn't find them enough productive.
Most people recognize that it is unnecessary to cause animals unnecessary suffering, yet sadly their daily choices contribute to the unnecessary suffering and death of animals: http://www.abolitionistapproach.com/what-michael-vick-taught-us/#.UXg7ysrSlI1
If you believe animals have a moral value, and you are against inflicting suffering on them, then go vegan. Learn more in the above resources and www.vegankit.com