Honestly, I haven't found that we are lacking anything by having left the rooster to others. I do find that those who do not have chickens shy away from farm fresh eggs because they have heard of the horror stories of finding a fertilized egg or partial chick in the egg.
For the record (as many of my non-farm friends did not know) if you don't have a rooster, there is zero chance of having anything besides an egg in your egg...i.e. no rooster, no fertilization. Sounds simple enough but many do not know this tidbit.
Did you know that chickens need a roosting spot and if you don't keep them in a coop they will roost in almost anything that is off the ground overnight including low tree branches (we have found a stray girl roosting on top of the woodpile, the hay mound, the seat of a bike, etc when they don't get put up for the night). Here is a snapshot of my girls roosting and also of the laying boxes we use, courtesy of my parents who shared with us when we moved to our farm.
One of the funniest things I have seen is when we had Turkeys and the Turkeys were so big that they would push the hens off the roosting slats.
Here is a snapshot of one of the cool doubles we got a week or so ago. This one was so large that when we cracked it there were literally 2 full sized eggs inside (usually a double has smaller yolks and whites, kinda like human baby twin sets are oft times smaller than a single birth).