
1. It depends on the breed. I wouldn't sell a puppy of mine to anybody who worked full time. I have to say one couple went away, arranged for half the neighbourhood to come in when they weren't home, I relented. Generally speaking however, no way. If you saw a puppy in his original home, with his siblings, you'd understand what it would be like for a puppy coming from that situation into a strange place, with strangers and then those 'strangers' disappeared too.
2. Yes it can work, but 9 out of 10 times it doesn't. Housetraining takes forever, some puppies can be very noisy and destructive, and by the time they reach puberty, are just hooligans.
3. I know times have changed and far more people have to work full time these days, but the bottom line is having a pet, any pet really, is a luxury, not a necessity and priorities have to be set. People who think taking on a dog is okay when they are not there for 8 hours during the day, and then 8 hours sleeping when they are, are kidding themselves. Unfortunately we live in a 'want it all' world now. And incidentally on the nights your husband works, he will presumably want to be sleeping during the daytime - what about the dog/puppy especially, then?
There was a recent survey done involving about 40 dogs in one town. Cameras were set up in the homes where people were out all day (this was with adult dogs, not puppies too). The results - about 6 were 'okay'. Another 6 were showing signs of separation problems and the rest .... suffice to say they paced, howled, barked, were destructive (which obviously the owners already knew about) and messed (ditto re owners knowing about). Many of the owners, being shown the results, were stunned. Quite a few were actually reduced to tears watching. Clearly most thought their dogs slept all the time they were out - which of course, they don't. Even in the wild, those left behind when the main pack went off hunting, were on alert, watching for the return of the pack. It's not often much different for our dogs.
Just to add had we not been able to afford for me to stop working, at least for the first 6 months, there quite literally would have been no dog (hound). I went back part time (3 hours mid-day). He went back to messing indoors.
I know you don't want to hear this, but quodos to those breeders who prefer not to sell to people working full time. Because they know what could happen!
ps To rely on others to step in when you can't be there isn't right. It's not their dog and it may not always be convenient.