Do you consider classification of organisms is advantageous?

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
© 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.