So absolutely not. Breeding healthy puppies is a huge responsibility but I think everyone else has already said.
Also, if as you suspect your DP is financially motivated to do it, please, please bear in mind the enormous costs involved in doing it properly. The vets fees can be terrifying, especially if something goes wrong (which it easily can, even for very experienced breeders).
I speak as an experienced breeder who has very nearly lost her very precious dog while in whelp. In brief, she had desperate trouble while in labour and had to have an emergency caesarian and hysterectomy at the vets.
Caring for her afterwards meant I slept on the kitchen floor by her bed for well over a week to make sure she didn't die in the night and couldn't leave her unattended during the day. In addition there was the heartbreaking loss of stillborn pups, and another who died during the third night.
I will never, ever forget the hysterical, terrified Mummy dog trying to help her pup survive having just survived emergency surgery herself. It broke, and still breaks, my heart.
As well as all of that, there was the large 4 figure bill for emergency treatment from the vet to factor in on top of all the regular increased food bills, immunizations and stuff.
It is not a money spinner. As well as being a huge responsibility it also brings some very real risks.
Sorry if my post is a bit much though.