I love Doraemon other than any other anime. The main reason behind it is that this colorful anime is closely related to real life. We know it's impossible to make all the gadgets that our Doraemon takes out of his pocket but when I hear Nobita's problems or the problems faced by every other character in this anime, they are problems faced by me too. And Doraemon has a solution for everything. Thus Doraemon is made in such a way that if ever he would really exist then things would happen as it is in the show.
In all other shows there is a universal agent, a single passion. But in Doraemon we find a multitude of passions, if kept under check gives the characters unlimited joy and satisfaction; if exorbitant, leads to trouble. and yes there is a balance between the two in Doraemon. For example, Nobita's passion to save the environment or more precisely the forest on the hill behind his school where he runs off to in order too escape from Gian and Suneo. At first he is overjoyed with the help of Doraemon's gadget that the forest gives him everything he want. But then he forgets his family, friends and wants to lead a lazy life in the forest, his new home.
The forest attacks Doraemon and the others who went there to take him home. But in the end, the forest understands that this is not the kind of life that Nobita should lead, partly from listening to his friends especially our big D and partly from her thoughts.See, this balance and stability that characters portray is the intellectual factor that draws us to it. Although there are stock characters, yes in fact, Nobita is bullied by Gian and Suneo, Nobita cries, Doraemon is the one who rescues him but it can't be said so about all the episodes. Every character has prominence in one or the other.
Therefore I conclude by saying that all in all Doraemon is a work of the 22nd century.