Dogecoin will for sure have a future. The fact that they are a declared 'joke coin' means that they don't have to focus on the actual development of the coin's technology. As long as people give it value, it is going to have value. Mark my words, Jesus Coin is going to be the next Dogecoin! 
Are you kidding?! Jesus Coin was created as a joke and it carries an idea in itself no more than pump and dump scheme and creative scam.