No one likes trying to walk with blisters on their feet; this includes your pup. The big difference is that while your kids can tell you that they have blisters and that their feet are sore, your pup can't really tell you what's going on. In many cases, it is pretty obvious there is something wrong with your pup's feet. He may be limping, licking them constantly, or he won't let anyone touch his paws. Blisters can be caused by over-exercising, hot pavement, even excessive licking. Your dog can also end up with blood blisters if his paws become injured or pinched.
The last thing your pup wants is to have sore paws. They make everything about his life more difficult, from standing up to eat to going outside to pee. However, while your pup's paws will eventually heal, they are likely to remain painful until they do. It is your job to do everything in your power to prevent them. Your pup will appreciate the fact his paws no longer hurt, and it is a lot better for the health of his paws and his overall condition.
Your pup's feet are a lot like yours in many ways. If they are abused, they could form blisters. He will keep walking on blistered feet, albeit he might be limping simply because he has no way to tell you his feet are hurting. It is up to you as a responsible pet owner to keep an eye on your pup's paws to make sure they stay healthy and blister-free.