The same could be said about feral dogs. But that doesn't mean they're happy, healthy, safe, and living good lives does it? And that certainly doesn't mean people should just dump their dogs (who have a far better chance of survival than rabbits), or stop trying to rescue them.
All the backyard...
I disagree, domestic rabbits do not know how to survive in the wild as well as wild ones do. Domestic rabbits have been bred by humans for hundreds of years, and their ancestors (the European rabbit) isn't even native to here.
They should be able to live up to 10-12 years.
Regardless, it is...
Most people do not understand the difference between wild and domestic rabbits and assume they'll be fine. Which is how you end up with feral rabbit issues.
Dumped rabbits usually do not live good lives and often end up being hit by cars or they become food for another animal.
I would probably get the buck fixed first. It can take up to six weeks for him to become totally sterile after the procedure though, so keep that in mind.
Bucks, especially young ones at around 6 months, tend to spray. They also like to hump things, which can make things difficult when bonding...
If I were buying a rabbit as a pet, I would not care about a pedigree. And I definitely wouldn't pay extra for one.
But if I were a breeder I probably would.