Yes, classification of organisms is advantageous. Some advantages of classifying organisms are as follows:
(a) It helps in identifying an organism.
(b) It helps in predicting relationship between different species
(c) It helps in finding phylogeny of the organisms.
(d) It helps in studying the fossils.
(e) Because of the classification we can know characteristics of all the members of a taxon by studying characteristics of one or two organisms of the same taxon.