In my opinion, people have gotten a bit over paranoid. I've always walked my puppies and taken them places. With caution of course, and avoided high dog traffic areas like dog parks. I would be more careful in places with a lot of parvo or unvaccinated dogs, but where I live, it's fairly safe. Puppies need a lot of socialization at that age, and with the appropriate caution, I think the benefits outweigh the risk.