It's something normal, dogs licking people. Some people love it or hate the idea of dogs licking them. What's the real reason dogs love to lick people? After reading some articles on the subject, there are many reasons dogs lick, which is mainly to show and/or demonstrate emotion or to communicate. In fact, from what I have read and from my personal experience with my dogs, licking is a way to show respect, submission, and affection.
Since dogs aren't able to talk, dogs use licking as a way to communicate with other dogs and with humans. Especially around strangers, if a dog likes you, they'll normally lick your hand or even your face as a sign of acceptance. In the other hand, your dog might just want to be walked or of feed, which might be the reason your dog licks you. The list is endless to why dogs lick people, but on thing for sure is that it's something positive. A dog wouldn't lick you and then bark at you, right?
Even though I have had my dogs for three years, I'm still not 100% sure why my dogs lick me. It's like having a baby, where the baby cries for many reasons. It might need a diaper change, it's probably hungry, or just wants to be carried. The same goes for our dogs, they lick us because they want or need something, but either way, they sure are adorable.