Spending a little time interacting with them can go a long way in making breeding your own feeders a more pleasant task. They're neat animals with individual personalities. It's also nice to have them used to human interaction...if all you do is clean and feed, they're more likely to be nervous and skittish. Breeding/cleaning/feeding rodents can become a grueling chore as well, so it's best to try to find some enjoyment in it so not to burn yourself out quickly.